In short, there isn't a standard torque value across the board for each/every different device. I was clarifying that A1/A2s are torqued to the previously mentioned 15-20ft-lbs however my SureFire devices are 20-30. Lay on the wrench and make the appropriate hole point up. Then spin on your muzzle device finger tight. They can occasionally be reused, but not worth the trouble. Some will take a full rotation to reach 20lbs, other will be at 40lbs after 1/4 turn.I'm not sure I'm understanding you. The point is to allow a muzzle device to be indexed. Unfortunately, crush washers all crush differently. 223/5.56 rifle, offering both distinct looks and reliabilty. The ATI AR15 Shark Muzzle Brake w/Crush Washer is a stunning upgrade to your. 223/5.56 NATO 1/2×28 for your custom AR-15 build from AT3 Tactical. Now if you're blindly going into things either careless of torque values or just don't have a torque wrench and exceed torque significantly, yeah I would assume you'll see problems.The issue with A1/A2 flash hiders and 20-30lbs of torque rule is you would need to try a dozen crush washers to get one to torque and time in that range. Grab a ATI AR-15 Shark Muzzle Brake w/Crush Washer. If you exceed by 2-6ft/lbs to time "just right" as I've done once or twice, I don't expect (and haven't seen) accuracy issues. All of my SureFire devices list 20 to 30.Īnd for what it's worth I haven't seen any legitimate data on this.and therefore think it's loosely a myth with the exception of some people experiencing accuracy issues. Have been lucky so far installing AR 15 muzzle breaks but with three different crush washers cant get the ports to line up right on a new muzzle break. this thread kept making me think about the muzzle devices that sometimes "ting's" when fired. But, so far that hasn't happened.Īnd if they had all those "perfect barrel" answers. From their Mini Comp to the Minimalist Stealth flash suppressor, Griffin Armament does a great job of keeping things small and effective. The AR-15 Crush Washer fits most barrel profiles and allows proper attachment of muzzle device and has 12 Pieces per pack. Its a definite improvement on over-torquing crush washers and hoping for the best. Use whatever combination of shims you need to properly align your muzzle device. Griffin Armament does a fantastic job of creating minimalist muzzle devices. Each Primary Weapons System Shim Kit comes with (8) size 2 muzzle brake shims, and one each of the large (1) shim and the number 3 shim. People with far more knowledge then I, say not to over torque. Griffin Armament Taper Mount Minimalist Stealth Flash Suppressor. and then the muzzle diameter ( some of the variables.) If those can mess with consistent accuracy, I wouldn't be surprised one bit if a over torqued muzzle device could as well.īarrel harmonics is possibly involved as well. Kind of like how you don't want a over torqued GB set screws. Maybe a better way to put it, would be it isn't going to help accuracy.Īnd I don't know specifically the way it is bad, but I can certainly believe it messing with the last place your barrel see's the bullet. That said, there are enough variables involved to not be able to make a blanket 100% yes statement. I still prefer a clamshell block for barrel nut installation and barrel blocks for muzzle device installation.ĮTA: Forgot to add, the new "Super" Reaction Rod has little tabs that tighten down on the ejection port that are supposed to support the upper and prevent this issue when torquing barrel nuts.IMHO, yes, over torquing can inhibit your barrel from shooting its best. When torquing on a barrel nut, yes, it can happen. Only risk is unscrewing the barrel from the extension (which shouldn't be an issue provided the extension was installed correctly). Muzzle brake features an aggressive six prong. I thought the risk of using a reaction rod type device is that it places all of the torque on the index pin? This muzzle brake has 1/2-28 thread pitch and comes with stainless steel crush washer. Is there any risk of rotating the barrel in the upper when using a reaction rod? Main Menu Assembling Mil Spec & Free Float Barrels: Section 5 Installing a Flash Hider or Muzzle Brake. If you're using barrel blocks or a Reaction Rod type device (the correct tools), you're not applying any torque to the upper or index pin. Yeah, if your securing the entire upper in your vise via a clamshell block (or something similar). It really does pay to know what you are doing when working on stuff. You can ruin the index slot in the upper by overtorquing a muzzle device which can also ruin the bbl.so It's a two for. I swear, it's like a large portion of you guys have never actually assembled an AR. Ummm, if you're installing a muzzle device correctly, using the proper tools, there's zero chance of breaking an index pin no matter how much torque you use. Yes, as stated you can distort muzzle and negatively effect accuracy
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