Loctite ar barrel. AR barrel shimming AR barrel shimming.

Loctite ar barrel Also, Diamondback sells AR-10 barrels. Thread-locker, most commonly known by the Loctite® brand name, is a lot like a Dremel® tool: if you have it, you feel an almost overpowering urge to use it - I built my first AR and have issues with the gas block sliding forward, even when tightening it down hard and using green loctite. To get a non bull 16” AR barrel you pretty much have to order them made custom, but that has always been the case. If there is a lot of slop between the barrel extension and upper 609 or 620 Loctite will work. I think the barrel extension is slightly undersized, it's really loose in the 2 flat top receivers I tried it in and still a little wobbly in a M16 upper that any other barrel needs a little coaxing to get in. What anti seize are you guys using for the barrel threads and the muzzle brake? Just an FYI, blue aloctite fails at 300 degrees which is less then the temp an AR barrel can get during rapid fire. 004 between it and my extension. Reactions: Steven Rademacher. John . Proponents of "bedding" an AR-15 barrel use green Loctite® 294 to anchor the barrel extension in the receiver. This might help secure a particularly loose-fitting barrel extension. Messages 7,807 Graphite lubricants are generally not recommended for AR-15 barrel nuts as they tend to attract more dirt and debris, potentially causing malfunctions. My superlative arms agb came with a pair of cuped set screws. What Loctite remained on the barrel extension just peeled off. I would add the Loctite 609 because it will at 3000 PSI tensile strength and increase the rigidity of the interface. MarinePMI Ban Cat Handler. Driving the barrel out with a dowel centers the force on the centerline of the barrel and prevents cocking. Or at least reduces the Green Loctite on barrel nuts, and on a few buffer tube castle nuts. Wrap with rubber band while it dries for about 15-20m Posted "I built up dummy AR-15's using a dozen barrels randomly selected from assorted custom barrel makers, all with standard barrel extensions. Seems to me like the purpose of the loctite is to keep the larger nut in place so the rest of the system lines up. Confirm Action. 800-741-0015 Wish I have no idea if the barrel was drilled for the sights before or after it was installed in the receiver. Reply reply More replies. The copper particle based loctite is the best I have come across. Is 620 still the "go-to" bedding agent? Loctite 620 is used on BCG gas keys and sometimes used to bed AR barrels. Red loctite on the gas block is common with manufacturers like BCM, but there should NOT be red loctite under the barrel nut. Sign in or Register () close Javascript is required. It does NOT include Loctite 620. We used a drop of blue loctite to put a muzzle brake on his barrel. some will say that blue loctite burns off at too low a temp. Staff member. I have never used anti seize on a barrel nut. P. Good luck getting it apart. Wipe it dry. Slip the barrel into the upper so that any excess runs out the front. (Some aftermarket AR-15 pistol grips DO come with material to put on the grip screw, but it's not Loctite. Shims & Rockset for AR Muzzle devices , but for repo , Crush or Peel (in a way , a shim ) washer . If you apply red Loctite (type 620), the barrel will be very difficult to remove without application of considerable heat and hammering, something your pet rifle doesn't deserve. ) What about the barrel nut threads? Nope, says Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. I would only loctite on accessories that I was sure I wanted to stay in one place. To remove, you need to heat the parts to 500 degrees (MAP torch for 5 minutes - I timed it when tried to remove a muzzle device from an old AK, Do not loctite the barrel nut. Then heat the end of the upper receiver with a heat gun and insert the barrel freshly taken out of the freezer. Barrel: Proof Rifle+1 Gas system, 6mm arc chamber, 18" barrel length, model 128688 Handguard: CMT HDM Arca 17" Gasblock: Superlative arms Clamp model . I am planning to use ss shim stock and 620 Loctite on the fit between the barrel extension and the upper. Hot Take: We are spoiled to have available the AR-15s that we do, and barring QC issues, even the low end AR-15s are as serviceable as you will ever need. You can puta little grease on the buffer tube threads but most people don’t do this imo. Moderator. Most blued rifles are barreled, polished, degreased and dropped into some nice hot salt Loose barrels are fairly rare. NWOR. Odds are, you have a bunch of experience with firearms and know how to effectively handle one. My real question is whether I need to use 680 green Loctite between the barrel and the gas block as well. You can also "bed" the gap around the barrel and the upper receiver with Loctite 620. By bmiller June 6, 2015 in Rifle Acceptabkerange is 35 to 85 foot pounds, i believe. Member Benefits: No ad networks! Discuss all aspects of firearm ownership; Discuss anti-gun legislation; Buy, sell, and trade in I used this green Loctite 640 before to basically 'glue' a sloppy barrel to the receiver and it tightened up the groups. Walt Kuleck, in his AR-15 assembly guide, recommends bedding the barrel (extension) to the receiver with red Loctite to further prevent movement of the barrel when it heats up. ft. 62x39, with a 16’’ barrel. Bedding an AR barrel is really overkill in my opinion, I So, after you knock the barrel out of the receiver with a hammer and a long rod to act as a makeshift punch, the Loctite stays stuck to the extension but not the receiver. lube the barrel tenon threads with a light amount of lube. How do you know if an AR-15 flash hider is properly aligned? Can loctite be used when aligning an AR-15 flash hider? This video is about a Hodge Defense Barrel Install Ditch the Teflon tape. Features: 16″ Barrel; 5R Rifling – button pulled; 1:7 Twist. Just got my B-14R, and I was wondering if I should be using loctite on the barrel thread protector to keep it from loosening up or not? or should I put some sort of brake on the end? I would prefer a suppressor, but that’s out of the question for the foreseeable future. Oron a quality receiver like a That was my experience with Loctite 609. One of Joe's videos: Like. 000 I’m not sure if they go bigger than that. Contest: Show Us Your Winter Gear! Happy New Year everyone! Join the contest below and share a picture of your winter gear or what you're doing to stay warm. My new 11. 620 takes 450 to break down. You can use green 609/620 loctite on the barrel extension, but not the barrel nut. 6. Casey . Some non-retards in the So when you put the barrel nut on an tighten it down, the barrel may cant ever so slightly one side or the other. After the windage was set for the 200 yard no-wind zero and the windage set screws tightened (and 290 wicked in), I'd put some 290 where the barrel and gas block (FSB) met. Barrel isn't going anywhere without using a torch. It’s just not the worth the hassle. Adds up to I have seen some people recommend Loctite 620 for bedding the barrel extension to the upper receiver. And since it's marketed for bedding AR barrels to the upper, expect to see that shit used more often by your local Fudds. I do both, i shim and use green loctite as a sorta lube to help the I'm trying to build the most accurate AR I can, which includes "bedding" the barrel. Put on a good quality gas system. Just anti-seize/temp resistant grease. Table of Contents. I’ve got loctite 680 and it can be used to fill voids up to . Firstly, I Quoted: I've been contemplating doing the loctite thing, I just got a barrel that is pretty darn loose and wobbly. They hold the upper receiver in a vice, apply heat and use a 1" dowel and a mallet to drive the barrel out of the receiver. The only thread locker that made any sense to me was using My real question is whether I need to use 680 green Loctite between the barrel and the gas block as well. Using a dowl and hammer the barrel came right out. I'm afraid that using a torch to put enough heat into it will damage the finish on the extension or the blueing on the barrel, so I will try chemistry. Broke out the propane torch and heated it up until you could see the 620 smoking. It's just not a physical property of the compound. If you use a lapping device on a drill and some polish, you can fix that. IMHO of course. you for bedding, IMO, if that's what you're referring to as Loctite. Please enable javascript before you are allowed to see this page. Posted: 12/13/2020 9:31:31 PM EST [#28] Quote History. Dusty Stevens Shiner. For application of and AR barrel it likely could be more since we are not trying to get shear strength, mostly compressive strength. IN the case of an AR, the barrel's extension is hard bottomed out in the upper and a nut is clamping it in the direction of recoil force. Loctite the gas block screws. I use just enough that there is minimal spill out, less to clean up. 999 and 1. I believe DSI does it for $50. Gun Tech Steve Ostrem talks to us about anti-seize and it's applications on AR-15 barrel nuts. Blue loctite (242 or 243) on pistol grip screw and maybe your handguard screws. Aeroshell grease on the barrel extension where it goes into the upper, on the upper threads and on muzzle threads. Some folks use a sleeve retaining compound such as loctite 609 to bed the barrel extension in I recently went down this rabbit hole and lapped the reciever face and used . It can be easier to try that way first as the dowel method can be irritating having one hand with the mallet, one hand holding the receiver, Navigate to our Website if you are looking for more details on this product. However I am a heavy equipment contractor and have used most every anti seize out there. Loctite 768 solvent might work; I've got "ones of thousandths" (need to verify with calipers) of play between a barrel and an upper- I have never used the loctite method of securing the barrel, but have previously frozen a barrel and heated an upper, put a wrap of . Just jut the barrel into its receptacle in the upper, thread down the barrel nut, torque it to 35 foot-pounds, and There is no need to bed the barrel. There is not much area to strike on the upper and you could easily damage it. AR match rifle builders use barrel extensions that are either larger AR 15 Barrel Nut Grease: A Guide to Choosing the Best Option. is well below the torque limit for that size thread by at least one half. I've tried a heat gun. Reactions: BDinPutnam. As a gun owner, you know that taking care of your firearm is essential. The Video showing the process of Lapping an upper AR-15 receiver and bedding a barrel using Loctite 620. It is a discount Ballistic Advantage I got last Black Friday for about $100. Jun 3, 2010 8,219 12,977 I used loctite 620 to bed a barrel a while ago. Quoted: Just some random thoughts on using Loctite to "glue" the barrel in. There has also been reports that Tapered type Pins used on A2 sights can also effect Bullet path in Barrels , they say any pressure against the Barrel with set screws , can also effect accuracy . Preventing swapping in a short barrel as a way around my other precautions. 5" AR with a criterion barrel and was getting 0. Receiver Prep and AR15 Barrel Installation Lapping AR Receivers is a Bad Idea. Im looking for input from experienced builders only please. From the book: "When properly executed, the very substantial increases in the bearing surfaces of the OD's and ID's of the barrel and receiver extension adds a tremendous additional "capture" and support I take it most folks don't bed their AR barrels, haven't experimented with different methods/products or simply feel whatever you use isn't critical enough to warrant He shims and uses Loctite. Copper anti-seize is specifically designed for high heat applications. I have seen a post that states this is how BCM If you are just getting into AR15's, I recommend clicking out of this thread. With proper torque the nut will not come loose. Are you sure you wish to do this? My real question is whether I need to use 680 green Loctite between the barrel and the gas block as well. Minuteman. At a quick glance, installing an AR-15 barrel doesn't seem hard. My barrel and receiver have an interference fit, so I’ll heat the receiver and freeze the Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. You will probably cause some major problems for yourself, and make your smith maybe break even for the month if you take your attempts at duplicating these techniques to him after you jack up your upper receiver/barrel. (AR/M16 excepted) Aluminum and bayonets do not go well together. Never have done JB, I always figured that you can never re-barrel with that method. I am using a BCM barreloh the horror 12 rounds per minute, and a BCM low profile gas block. I think I will ignore the . I swapped out the barrel on a AR I built I swapped out the barrel on a AR I built last year that I use the SRC on, It was a pain to get the barrel out, I also use blue Loctite on carbine buffer tube lock nut too, I know they say its taboo but I do it anyways, usually just a drop. How to Remove the AR 15 Barrel or AR 10 Barrel. Another option is holding the barrel and hitting the receiver where the gas tube is with a rubber mallet. These folks think The 620 Loctite pretty much shattered & the barrel came out easily. I've never used loctite on a muzzle device on a pistol or an AR rifle because of the heat issue. Seemed to work great and was very tight. I'd love to know your process and treat my future Criterion barrel right, the way it should be. Use Loctite 609 or similar retaining compound to glue in place. Are you sure you wish to they apply the Loctite to the barrel Carefully slide the front sight/end cap assembly onto the barrel. would crush the threads or deform chamber dimensions, then scrap that barrel, because the barrel is more lead than steel. It must be ordered from a industrial supply house, you won't find it locally. Use anti-seize on the barrel nut to ensure you can take it off later. It’s important during this step to ensure that the threads have sufficient lubrication. Full Member. Pinned gas blocks are the safest bet FWIW, but unnecessary for most people. Red Loctite on free floating handguard screws. "My duty grade AR can shoot sub-MOA all day long" Originally posted here. Spread a thin layer of Loctite on the barrel extension only. This will dampen the barrel during shooting and may improve accuracy. Warning . One way to ensure that your AR 15 continues to perform well is by using the right lubricant I’ve installed one barrel with Loctite on the extension. Posted: 8/4/2023 10:49:15 AM EST [#13] Don As the title states, what Anti-Seize Lubricant do you recommend when installing a new barrel? Add to that Loctite makes TWO green versions --one is weaker than blue, but the other is PERMANENT. Aug 22, 2020 #25 BDinPutnam This Bedding Kit includes enough Shim Material to “Shim & Bed” a minimum of 2-3 AR Barrels. 5. On an AR-15, the barrel is held on to the front of the upper receiver by a threaded barrel nut that clamps down on a flange "Loctite 609 is a low viscosity, rapid-curing anaerobic adhesive that augments the strength of press fit assemblies or slip fit assemblies up to 0. 006”. I would either look for another upper, or just know that this upper will be for In the past, I just installed my barrel into my receiver, torqued it down and moved on. I use Rocksett on the threads on all my muzzle devices. The 290 would seep in between the two (since it's wicking grade Loctite) and would dry with a good seal to sort of 'bed' the FSB to the barrel (and mitigate possible gas leak). So I decided to bed my barrel for my next build. I have not mic’d receiver however, I’d guess there’s no more than . 95% + of all AR-15's have never been shimmed or bedded. I use it on: barrel extension for better receiver fit, on the gas block journal, attachment screws, scope mount screws (all). I Seems the standard AR barrel extension is . I would definitely not use it on an AR barrel nut attached to an upper receiver Posted: 8/4/2023 10:33:00 AM EST [#6] No more than blue if it I actually had to smack a BCM rail to get it on/off the barrel nut, no loctite needed on that one even if it didnt have anti-rotation tabs. Are you However, in the thread the idea of using blue Loctite or similar material on a barrel extension during assembly to enhance accuracy is discussed. I've tried freezing the whole thing and then heating the receiver. I usually torque to around 50 lbs/ft. My experience with Loctite and AR uppers is confined to Red (271). I have been an AR armorer for years and have build or worked on many AR's and have never used loctite on the barrel. 620 is for this sorta thing - cylindrical fittings at high temps. Loctite is commonly used when mounting optics and I just received my 6mm ARC barrel. The barrel nut is off. like the one by fulton armory, they recommend putting red loctite around the barrel extension before putting it into the upper. These folks think bedding the barrel prevents it from wobbling, thus making their AR-15s more accurate. I use a thin coat of grease on the receiver threads when torquing an AR barrel nut, the correct torque spec for which is from 36 lbs/ft to 80 lbs/ft. So using red or blue loctite really doesnt do a whole lot on devices contacting the barrel. You can also get over sized barrel extensions on match barrels like WOA which would allow you to have a very tight fit on a Very little got on the threads when I did it and wiped off easy. Brush Top Can 749-001-855 Silver Grade Anti-Seize Stick 532-000-007 Learn more here Note to readers: Please click the share buttons Anti-seize is just that, a compound to prevent seizing of components. 002 (or whatever) shim stock around the extension, and assembled. 416 twice stress relieved steel, spiral fluted, sand blasted, polished, and TiN coated! This is not your ordinary AR-15 barrel. A 14. I'm pretty sure we can get the current muzzle brake off his barrel. carbonsix has to say: When installing a new CarbonSix Barrel, clean the treads on the barrel, receiver and barrel nut (if there is one) and lube the threads with anti-seize. 6 MOA 5 round shot groups with Nosler Match grade factory ammo. Found the installation guide online. Alright so I will soon be installing my noveske barrel to an upper. It is better than the He tests via top of the line mechanical rest. Kit includes (4) . I don’t loctite anything except for gas block screw threads and handguard screws if applicable using low strength Loctite. I was able to get it off with the heat gun. Like Bryan said the toque spec is 30-80 lbs so if it was on the lower end of that of course it is easier to take apart but I would never but loctite on a barrel. Link to Kelly J. All done to improve accuracy and consistency in the AR- I have seen some people recommend Loctite 620 for bedding the barrel extension to the upper receiver. Blue (242/243) is a medium strength thread locker. With a properly torqued barrel nut, it should not loosen or allow movement of the barrel at the nut. 12. 005" in diameter. I want my install to be as good as possible to optimize the noveske barrel. Assuming that the average size thread on a rifle barrel is 1", then 150 lb. 5" and make sure it does not mitigate or hide flash. Bolt guns maybe 3 or 4, most not properly barreled to begin with. They never get that hot and I feel the benefit (among other things) improves accuracy. 001 shim stock and loctite. Oh, you might need a different gas tube if the new barrel is rifle length gas and the old one was mid or carbine length gas etc. Very tight fit. Posted: 12/23/2019 10:26:53 PM EST [#2] First upper i built a Go for the handguard and better barrel nut system. I am in the process of assembling my first upper receiver. People say loctite will come loose if it gets hot, my experience was with a set screw FSB that I Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell Do you folks utilize grease or anti-seize under the barrel nut when installing barrel to I've used grease (molly/non molly), anti-seize both copeer based and nickle based, even used red loctite 7 years now no issues. 8125 posts · Joined 2011 Add to quote; Only show this user #1 · Aug 30, 2019. I think we have all the proper tools and equipment needed to take it off. None of this will *hurt* a CQB gun, but it's the last nTH of a truly accurate AR. not enough draw. So DO NOT use Loctite on the castle nut / buffer tube connection or the pistol grip screw. I used a 10mm tip for the 9mm barrel I lapped my receiver while I had it apart to swap the barrel, and bedded it with loctite 680 because that's what I had on hand. A 16" barrel does not need to follow ATF guidelines since it is perfectly legal federally. Dec 15, 2019 I have been using Loctite 466863 C5A Paste Anti-Seize Lubricant on all of my barrel nuts for break in and other high heat applications. Brownells Gun Tech™ Caleb Savant has a really helpful tip for anybody installing a low-profile gas block on an AR-15. Green Loctite between barrel and gas block. The gunsmith recommends using Loctite 609 (green) on the barrel extension before installing in the upper receiver. I had an extremely loose fit upper that I used Devcon steel epoxy and it The purpose is not to precisely match the AR-15 rifle’s action to the stock like on a bolt action rifle, but to precisely fit the barrel extension to the upper receiver, making them function as one solid unit. The build itself does not need loctite. But I didn’t get it all off so the barrel went back in mostly the Sleeve retainer compound for AR barrel. Bed the barrel with loctite 609 or no? Hey guys. The truth is if you get your barrel up to 360 degrees Fahrenheit, you're killing it anyway and likely more interested in mag dumps. Lapp or not Lapp the upper for the new barrel? Lapping good or not? Search. The temperature range is 350 degrees. S. Posted: 4/30/2016 6:14:22 AM EST [#21] Quote The point of "bedding" an AR barrel is to make sure it's centered in I don’t believe you will get better accuracy per se, weather it’s “thermal fitted” it not to me that sounds like a marketing thing lots of long range custom builds with Custom stupid expensive barrels are installed with some anti seize on the Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. It came out great but if I had to do it again I would jusy buy a thermal fit upper and true the face of the reciever and call it a day. Any tips on removal? Skip to main content. Used Loctite 620 on both of them, don't care if I can't get it apart. I found out how well Permatex sleeve retainer compound works, VERY GOOD, Thank you. Would not budge. It’s intended purpose is to be a hard use, high rate of fire SBR. I have searched and read and unless I am directed otherwise here, I will do the following. Copper Anti-Seize, 8 oz. The best way to fix it would be to have the front sight re mounted. I removed the barrel but there's still some loctite left on the barrel. Commercial Supporter. - CW Bedding an AR barrel is really overkill in my opinion, I have bedded barrels on my long range guns, but the design of this platform, I have never talked to Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. I talked with the Loctite engineers, and even though 680 is rated slightly lower at 290 degrees, they felt bluing temps would not harm it. I don't use Loctite on scope rings; I use Torx head scope ring screws, and, per Leupold, use a tiny drop of oil before tightening up the screws. Ah, I didn't know they had implemented that rule for r/longrange. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. I wouldn't recommend using it for bedding a barrel. 083-000-044 Loctite C5A Anti-Seize Lubricant- 1 oz. Dimple the barrel Test fit block, make sure everything lines up Clean up/degrease the barrel and block/block threads Apply green loctite retaining compound to inside of block (avoid threads and gas port) Slide block on Apply red loctite to set screws Torque to 25 in/lbs Stake the block over the set screws Clean up any mess I would heat the barrel with a heat gun, I suspect this will do it. Like the other poster suggested I also After a lot of research and thinking what I decided to do was just to put red Loctite on the threads and twist the sucker down. Did the Loctite help? I dunno, but I don’t think it hurt and it was easy to do. Barrel temp only got shy of 300f. It's really the number folks should go by because each color also has varieties according to thread size. I don’t think any loctite or quick and dirty fixes would help your cause. If torquing a barrel thread to 150 lb. But I also saw a video made by Criterion Barrels where they used Loctite 609. Torque it to spec with the barrel nut and leave it, you will be perfectly fine. You want to do it on a bottom of the barrel budget build pistol. Proper torque and a dimpled barrel is unlikely to see a set screw back out. Proponents of “bedding” an AR-15 barrel use green Loctite® 294 to anchor the barrel extension in the receiver. That larger nut they call the “barrel nut” acts like an extension for the receiver and the actual, smaller “barrel retainer nut” is the one that is torqued to keep the barrel in place. To align an AR-15 flash hider, simply thread it onto the barrel in the correct orientation and use a wrench to tighten it securely. Again, new to AR15's, click out of this thread now. Nolte 3/20/53 - 11/6/08 Remembering Kelly Is anti-seize necessary for all AR-15 barrel nuts? It’s not always necessary, but it can help prevent future issues with galling or seizing. Anyways, at this point it does not really matter. If you ever want to take the It is not common to find purple Loctite in use on the AR platform. While an AR-15 may seem like a relatively uncomplicated machine with only about 200 parts that can be assembled with a hammer, pin punch, and basic knowledge, achieving Putting a barrel on an AR-15 is a lot easier than re-barreling an FAL where you have to take much more care in timing the barrel to the receiver I'm concerned with disassembly to change out barrels if I use the White Oak tube with loctite. 0005" runout on the receiver face. I was uncertain as to felt tip size for the feed ramp but looks like I'm going to use a bullet shape tip in 6mm. Kind of loose almost. Open menu Open navigation Go to Reddit Home. It shoots sub MOA with hand loads. ETA: I don’t think the set screws rely on Loctite due to the amount of heat. And then Loctite 620 Retaining Compound on the barrel extension Posted: 3) Loctite 620 (green stuff) applied to the barrel extension outer diameter before inserting into receiver to fill any absence (void) around the barrel extension - loctite 620 is made for circular voids and expands as it dries but isnt any kind of locking agent its just there to ensure no barrel shift on the receiver. The Geiselle so-called "bombproof installation" uses a Next up is my AR barrel. Are you sure you wish (Criterion and Spikes FN barrel). How often should I reapply anti-seize to my AR-15 barrel nut? It’s a good idea to reapply anti-seize whenever you disassemble and reassemble the barrel nut. 998 Bat machine makes them . But under normal circumstances, a properly tightened barrel Gun Tech Steve Ostrem talks to us about anti-seize and it's applications on AR-15 barrel nuts. Over the years, I've probably ran into 100 or so M16's with loose barrels. It's just a matter of overcoming the friction fit and any carbon build up between the barrel extension and the upper. I have seen a post that states this is how BCM assembles theirs??? Posted: 12/23/2019 10:26:16 PM EST [#1] Just install and tighten the set screws down. Make sure the interior of the upper is clean and dry. Loctite 620, however, is specifically made Put the barrel in the freezer for a few hours. I have blued numerous barrels with 680 secured liners with no ill results. Brush Top Can 749-001-855 Silver Grade Anti-Seize Stick 532-000-007 Learn more here Note to readers: Please click the share buttons I use it on: barrel extension for better receiver fit, on the gas block journal, attachment screws, scope mount screws (all). The lock-tite around the barrel-extension makes the barrel-extension and receiver one-piece for all intents and purposes. Green retaining loctite is not necessary. Copper Anti-Seize, 8 oz. 0005 Shims. I’m wondering if anyone has used only loctite to bed barrel extension? I helped my adult son put together an AR type SBR several years ago. Check out LOCTITE C5-A ANTI-SEIZE LUBE Skip to Content. There are other types of loctite for high temp that may be even more effective Actually, yes. Loctite 609 or 620 (custom order from a machining supply house) works great "as is" for this job. The Loctite copper I’d at least use Loctite 271, which is what SOLGW recommends. Currently have a Radical Arms AR in 7. Search titles only By: Search Advanced search Search titles only Criterion Barrels - Accurizing the AR-15 Part 3. Two questions: (1) Are there setscrews Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. Or if lapping the upper is really necessary. Once you have decided to change the barrel, (we will go into barrel choices a later in the article), it is time to remove that old barrel. I know it’s possible to remove them, but since barrels are considered a consumable resource, I just factor about $80 for a new upper every time I do a barrel change. Clean perfectly, then swab with alcohol. Threadlockers: A Guide for AR-15 DIY’ers – BRD Gun Works . I need some advice for removing my AR pistol barrel. However, it is somewhat 'permanent' solution because to remove, after all it is a sleeve bearing retainer. I use Loctite 609 or 620. Lilja makes high end barrels. I use 680 or 620 loctite. The loctite takes up some of the slop between the barrel extension and the upper receiver so that it can’t cant as the gun is firing and the bolt is unlocking and then slamming back in to lock. Even though the silver solder method is listed by BATFE as an acccepted method (Federally for short barrels and perm comps to meet the length min), it was never used by local stores or most people during the pre-2013 AWB ban in The cost of replacing an AR-15 barrel can vary greatly depending on the quality and type of barrel you choose. Let’s take a look at each of these colors and what they indicate: Purple: a slightly lower-strength threadlocker than blue that’s formulated for I use loctite 620 between the chamber extension of the barrel and the inner walls of the upper. Do I need to replace these with conical or knurled set screws? If it's a true precision rig, lap the front of the receiver and bed the barrel extension with Red Loctite. Also, you may or may not need to add a gap between gas block and barrel shoulder. Earthquake Discussion starter. 001 Shims and (2) . 5K views 23 replies 11 participants last post by 1100 tac Sep 5, 2019. He reccomends bat machine oversized barrel extensions as the best way to "bed" a barrel extension to receiver, the next best option would be to use a combination of ss shim stock and loctite slip fit retaining compound. I found even doing this, you can easily take the barrel out as Transferring motion from barrel to stock gains you nothing if that stock isn't heavier and more stable. Install This 16" Tapered Profile 9mm AR Barrel with integral slim flash hider is crafted from 4150 CMV steel and given a salt bath nitride finish. Jump to Latest 7. 750 gas journal Gas tube: Proof supplied with barrel, rifle+1 length BCG: CMC Triggers 6 arc enhanced, bolt headspacing verified to barrel with go/no go gauges, model 81635 Lower: Aero X15 stripped. Could you elaborate on the bedding compound and barrel extension fitment into the upper? I don't know if I should use Aeroshell 64 or a loctite sleeve retaining compound or what. However, if you don’t, please be careful when handling firearm Therein is the issue, the state does not say what that means. Red loctite I have read that moly grease is the most common but I have a tube of Loctite C5-A anti seize lubricant and was wondering if that can be used in place of moly grease? It says it is a copper based lubricant that protects metal parts from corrosion an seizure up to 1800* F. But I also saw a video made by Criterion Barrels where they used They basically made a case for shimming by mentioning the manufacturers that use an interference fit. You apparently have a match barrel with a corresponding match barrel extension. I consider that permanent. I am going to ask a machinist friend to help me dimple the barrel. These are made/filled by Chad and Donnas two youngest sons Tristan and Gabriel. Thanks. It'll fill any gaps. Understand that you may need barrel shims and muzzle device shims to get the timing right. Minimal Torque on Barrel Muzzle with Shims . The barrel extension usually fits into the receiver with a slightly snug slip fit. It's bond can be broken using regular hand-tools. Another application for red Loctite Agreed on the loctite. When I had separate comps and barrels I used Red Loctite (the 450-degree rated one), with and without primer. Either one works very well. (It's in my post history). Some folks use a sleeve retaining compound such as loctite 609 to bed the barrel extension in Dimple the barrel Test fit block, make sure everything lines up Clean up/degrease the barrel and block/block threads Apply green loctite retaining compound to inside of block (avoid threads and gas port) Slide block on Apply red loctite to set screws Torque to 25 in/lbs Stake the block over the set screws Clean up any mess Barrel bedding AR, Loctite 620 Thread starter lazarus; Start date Jun 27, 2019; The #1 community for Gun Owners of the Northeast. Just use the bolt without the recoil spring assembly installed to align the extractor as noted above. I use Loctite C5-A (copper based), you can use grease, anti-seize, or other appropriate high pressure lube. Can I use Teflon-based greases on my AR-15 barrel nut? I typically use 620 on barrel extensions for all precision / SPR type builds. Blue Loctite smeared on everything else with any threads. 083-000-044Loctite C5A Anti-Seize Lubr AR barrel shimming AR barrel shimming. . You want the barrel extension to mate square to the upper receiver, if you add loctite or any other compound it can induce a variable to which it won’t be square and at long distances it can have the potential to throw off your shots since it won’t be square to your Pic Rail. Then I started reading about bedding barrels with Green Loctite or shim stock to improve accuracy. We torqued it to how ever many inch pounds the manufacturer said. 750″ I understand people use shim stock to bed barrel extensions. The 620 will withstand over 300 degrees, so bluing will not effect it. - I also use green bearing sleeve locker on my rifle length uppers barrel nuts on my uppers once I am sure I like the barrel, that stuff is so strong the aluminum of the barrel nut or upper receiver will give before it does. My barrel guy told me to uninstall and reinstall to make the gas block more plumb. Get a torque screwdriver, you'll need it to torque your gas block screws to 30lbs per instructions. Hey Guys, I have an impact action on the way, and have a shouldered PVA barrel ready to tighten on. It this doesn't fix the problem plan on replacing the barrel with something better. I use Aeroshell because I find it gives a If you apply red Loctite (type 620), the barrel will be very difficult to remove without application of considerable heat and hammering, something your pet rifle doesn't deserve. Bedding the barrel extension is about as effective as betting a bolt action rifle's barrel within the Get help to accurately calculate and scope your sniper rifle using real shooting data. Remachining AR barrels is a time consuming, expensive, I am using it not only to insure that the barrel-nut doesn't loosen up, but also as a "bedding compound" It is my feeling that the AR-15 was never designed to have a 4 pound barrel hanging from it. 5" barrel follows ATF guidelines and NJ laws, so you need an extension pinned and welded to cover the remaining 1. When I bed a barrel with loctite 620 or 609, I consider the barrel and upper permanently bonded. How often should I replace the barrel on my AR-15? The frequency of barrel replacement depends on usage, but it is generally recommended to replace the barrel after approximately 10,000 rounds. Posted: 8/8 I think the premise here is that the barrel can shift when it heats up if this is not so. Red loctite is also on the edge (450). The ATF does. The threading on and torquing of an AR15 barrel nut meets none of that Loktite 609 is up to something like 0. I don’t care if I damage the barrel nut or even the barrel I just have to salvage the upper, I’m using it for the barrel that came in my LaRue accuracy package I’m going to take the upper to the shop, heat up the barrel nut and crank on it with a 3’ breaker bar That with the accurizing an AR series allowed me to build my 10. Its why suppressor manufactuers want you to use Rocksett (2,000 degrees) on their muzzle devices. I plan on using 272 hi temperature red Loctite on the set screws. During installation of the barrel, numerous attempts at drawing down and loosening of the barrel nut to align the gas tube may be required. Red Loctite, and sometimes Rocksett on gas block setscrews, even with dimpled barrels. Tube 749-102-006 Loctite C5A Anti-Seize Lubricant- 4 oz. Lou _____ NRA Certified Instructor & RSO Last edited by Lou_NC; 02-12-2017 at 08:56 AM Most local shops who do this (the compliance work) will pin and weld the thread protector at 4 points. Apply some aeroshell and out on the barrel and barrel nut. See 3,000+ New Gun Deals HERE. I have seen a post that states this is how BCM Using a jp vice block I first tried the heat gun. If you read Walt Kuleck's "AR 15 Assembly Guide" he says to use red loctite on the barrel extension, extension flange, and the very front of the reciever extension. Ensure that the end cap is seated firmly against the barrel shoulder. The Loctite 609 is the one you want IME. AR barrel shimming AR barrel shimming. Close. When pinning a gas block to the barrel I use Loctite 620 (green sleeve retaining compound) or equivalent on the taper pins. I'd still use Loctite 620 to bed the barrel, even if it's a thermal fit. If I shoot the barrel out I'll just replace the upper Like many other things in the AR world with twist rates and headspace and CHF, Criterion recommends Loctite green (609) on their barrel extensions to help create lockup, but a lot of people run them dry. If your barrel is easily/loosely going into the upper without having to sweat the upper a little, your accuracy can suffer. The barrel should be pretty damn tight going into the upper. I can not speak high enough of But seeing red loctite smeared on the barrel extensions and even gas blocks was a common sight back in the 90s and early 2000s. Yarome. Apply blue Loctite 242 to the set screw. 5” build does not have a tight barrel to receiver fit at all. Search. After I've test fired it, I use red loctite and torque it down untill the Allen wrench twists, then stake it. 016. I'm using a CMT billet upper with a Daniel CHF barrel. There is enough room on the barrel to move it forward 1/4 inch or so and drill a new set of holes. Exclusive Howa Barreled Actions On Sale This Week Only - SHOP NOW. It’s not designed to be a dedicated lubricant. tdwf ihbxftk nccec znf ctpn suswa ivmt erlzvef sls fmkjp