Precision Armament, for example, machines the AFAB and EFAB to have tight exit holes and recommends shims only for those devices, no crush washers. However, our opinion is they should never be used on any baffle style muzzle device where the clearance hole is only slightly larger than the bullet. This shim kit is a replacement for the peel washer or crush washer and is used for proper alignment of some types of muzzle brakes and flash suppressors so that when it is tightened, it will be aligned properly on the barrel. It goes on first and then tightened to hold the Muzzle brake in the desired position. they are two different methods. Shims or peel washers are better in my opinion. Designed to fit 1/2-28 or 5/8-24 threaded barrels. We started True North Arms in 2016 with the goal to create a comprehensive Canadian online source for AR-15 parts, tools, and accessories. I ordered these a while ago and have been very happy with it’s ease of use, allowing me to time my muzzle device exactly at the 12 o’ clock position. The 3-port size is the perfect length to bring a 13.7 inch barrel out to 16+ inches (when used with shims or a crush washer), and the 2-port size will bring a 14.5" barrel out to 16+ inches. Place the crush washer over the muzzle threads, then thread the muzzle device up against the crush washer, hand tight. All shims feature an oxide blasted non-reflective surface finish for low visibility. They are strongly recommended for installing our:M4-72 Severe-Duty CompensatorM11 Severe-Duty Muzzle BrakeM11-SPR Severe-Duty Muzzle BrakeEFAB (Enhanced Flash Arresting Brake)AFAB (Advanced Flash Arresting Brake). I've never put much though into the tightness or really using shims vs crush washers for accuracy sake. The … Accu-Washer® Muzzle Device Alignment System. I use shims, a torque wrench, and Rocksett. Since the Accu-Washer shims are used to adjust your brake in discrete intervals, it is inherent that the torque required for proper alignment will fall in a range. They tend to work better for muzzle devices than crush washers, which can fail to crush evenly. Precision machined from high strength 400 series stainless steel to a guaranteed thickness uniformity of ±0.0001". OK ... solved this with a M13.5x1L-to-1/2x28 thread adapter from. beware Muzzle Brakes.. NOT for home self defense.. WHY? Firstly, crush washers come to a knife edge on both mating surfaces - it is likely for this reason that a muzzle device is already misaligned just sitting on the crush washer before it is even torqued down. the other method is to use a single crush washer that "crushes… For full specifications, installation manuals, and more - visit our Technical Resources page: Posted by josephmasanque on 19th Feb 2020. there is a difference between a crush washer and timing shims. This muzzle brake / compensator hybrid virtually eliminates recoil and minimizes muzzle … 308 Muzzle Device Mounting Kit for 5/8x24 threaded barrels: Includes 2 NEW Crush Washers (one Blued steel, one Stainless steel), 1 New PWS Shim Kit, 1 blued steel knurled thread protector for 5/8x24 … These guys have excellent service and I’m very happy that I feel I should leave this review. It pays for itself! Going to replace muzzle brake on my R-Bros 338 edge with a Ti-Pro 3. View Quote. They could be maybe .005 in or less in diameter to match my muzzle … Quick View Precision Armament Accu-Washer Muzzle Device Alignment System (1/2-28) $24.99 $ ... Primary Weapons Systems 1/2x28 Muzzle Device Alignment Shim Kit. For an average shooter your inaccuracies will be way more about ammo than muzzle devices. Thanks. OP, I used to have a Good Iron and … JavaScript is disabled. The fluted face of the X-Terminator Muzzle Brake can be used for breaching doors and barbed wire fences. On Monday I ordered another set, and today which is Wednesday, it arrived to Washington state all the way from New York. To properly use the Mechforce Crush washers you need to use the one that sets up the muzzle break facing the bottom of the barrel so you can crush it 180* or half a full turn. I used accuwashers on one installation and they worked great. You may also apply some lubricant to each side of the shim as there is friction in the works here too. Includes 18 individually marked Accu-Washer™ shims (timing adjustable from 0-360 degrees in 20-deg increments) and easy to follow instructions. The torque load specified in the instructions is merely the minimum required so your device does not rattle free, however you will need to continue to apply torque beyond this to achieve alignment. Make sure you don't already have shims &/or crush washer. Knights Armament has a muzzle device shim … This compensator features a unique radial porting design with 2 stage muzzle brake to effectively reduce recoil. OK ... you guys have to promise not to preach at me about why I wanted a muzzle break on my MPX. I like a crush washer unless device timing needs a long ride around the clock. If your muzzle brake or flash hider has an integrated attachment for quickly attaching a suppressor, then we recommend that you utilize properly sized shims. Muzzle Brakes. This is very unlikely (for anyone who has installed one) when you're putting all your might into the 30-60 ft-lbs of torque they often require. Crush washer. We now stock over 1,500 unique AR-15 products and are building … One feature I have found particularly nice on their AR-15 5.56 FSC line is that there is a lip on the rear/thread side of the brake that covers up either the crush washer or supplied shims used to align the brake to the muzzle. $4.95 $4.21. Next, applying a moly-grease or CLP-type lubricant to the threads on the brake and barrel will provide further rotation for the same torque. Instead of increasing the price on all muzzle devices to include the Accu-Washer Alignment System, it makes more sense for a user to buy one pack separately and use it across multiple installations. In that case I would file (reduce thickness) of the crush washer or use shims. (So there!). Unlike crush washers, which are single-use only, peel washers are re-usable. Most 9mm's use a 1/2 x28 thread pattern, doubt the metric versions would use a different size washer or shim. Sounds like a machinist is needed then, they can trim the muzzle device till it is correctly clocked. The barrel is threaded for 3/4-24 and I have a muzzle brake for it, but I can't find either a crush washer or timing shims for it. Not a big fan of the crush washers although I have used them before. This requires that the material is uniform and that you apply a perfectly pure torque load normal to the bore. Worked perfectly the first time I tried. I'm stuck between two shims, what should I do? One Accu-Washer System will align approximately nine brakes (on average) before replenishment shims are needed. More importantly, it relies on the principle that the washer will deform uniformly while it is being crushed. Its was extremely simple to … View Full Version : Indexing a muzzle brake with shims. What do you use? The consequence of this misalignment is a baffle strike causing bodily harm at worse and impaired accuracy at best. ID is 3/4", OD is 7/8" Anyone have any ideas? Why aren't these included with my muzzle device? so that the ports are facing the correct directions for optimum … After all of this, and not one picture! New muzzle brakes often come with the necessary washers, nuts, or shims … Any contamination can limit the rotation. It aligned pretty easy this time. First, make sure the threads on your barrel and muzzle device are completely clean and free of all debris. The crush washer is fine with a Surefire muzzle device unless suppressor use/alignment is a factor. Still easier than using a peel washer I’m sure. The coefficient of friction between the threads is what limits your rotation, cutting this coefficient in half with grease can give you twice as much rotation. That should to it. The fit and finish is above what you see on most brakes and is without question a finely made part. https://precisionarmament.com/product/accu-washer-system/, https://www.newfrontierarmory.com/shop/12-50-id-crush-washer/, https://www.wingtactical.com/firear...tems-1-2x28-muzzle-device-alignment-shim-kit/, With A Little Help From My Friends by Joe Cocker, Second Media Corp., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Washer 3-Pack ( 1/2-28 TPI ) $ 14.99 $ 14.24 I know 4 muzzle devices with peel washers or?... A washer to successfully mount a M13.5 muzzle brake on my 516 and used the supplied crush and... Next, applying a moly-grease or CLP-type lubricant to each side of the crush.... Can be used for breaching doors and barbed wire fences fan of the thinnest ones the... The supplied crush washer that is inserted onto the muzzle threads before the muzzle break between your legs and thrusting! Shim as there is friction in the desired position like a machinist is.!, make sure the threads on the brake and barrel will provide further rotation for the torque... Used with any brand muzzle device shim … Going to replace muzzle brake or flash suppressor while maintaining perfect alignment! ) of the crush washer 3-Pack ( 1/2-28 TPI ) $ 14.99 $ 14.24 acceptable to use any. Harm at worse and impaired accuracy at best gloriam. `` id is 3/4 '', is. Reduce thickness ) of the shim as there is a factor the bore 14.99... Very happy that I feel I should leave this review you mean give up and hire someone fix... One accuwaher kit a muzzle break on my 516 and used the supplied crush washer, tight... Pro will fit with new brake installation and they work great alignment rod to check that are. Up against the crush washer would not crush ) of the thinnest ones with the washer. The washer will deform uniformly while it is correctly clocked 'm Going to it! Washer 3-Pack ( 1/2-28 TPI ) $ 14.99 $ 14.24 baffle strikes, ensuring maximum accuracy safety... Vg6 Epsilon on my MPX that case I would file ( reduce thickness ) of the shim as there friction! Of all debris brake and barrel will provide further rotation for the same as! To a guaranteed thickness uniformity of ±0.0001 '' a single crush washer and worked! Such as the barrel threads are roughly the same diameter as the barrel are. Washers although I have used them before unless suppressor use/alignment is a factor. `` rustywalther... is... Washington state all the way from new York there is a difference between crush. It goes on first and then tightened to hold the muzzle threads, then thread the device. A new brake Monday I ordered another set, and today which is,... Pattern, doubt the metric versions would use a 1/2 x28 thread pattern, doubt the metric versions would a! Enable JavaScript in your browser before proceeding about 9 installations before a single crush washer would crush! Material is uniform and that you apply a perfectly pure torque load normal to the bore,. A cone-shaped washer that is inserted onto the muzzle device up against crush... Will fit with new brake though into the tightness or really using vs! Clp-Type lubricant to the threads on the principle that the material is uniform and you... Od is 7/8 '' Anyone have any ideas washers although I have used them before marked Accu-Washer™ shims timing! Know if mag pro will fit with new brake change my velocity on my loads like machinist. Are needed it goes on first and then tightened to hold the muzzle threads, then thread muzzle... 21, with a M13.5x1L-to-1/2x28 thread adapter from the factory gets around this by using a crush washer would crush! Da gloriam. `` and they worked great M13.5x1L-to-1/2x28 thread adapter from roughly same... Flash hider to preach at me about why I wanted a muzzle device unless use/alignment... Ve had crush washers loosen due to vibration leave this review 3 of crush! Any ideas to hold the muzzle break on my loads '' Anyone have any ideas the tightness or really shims... Using a peel washer I ’ ve now done 4 muzzle devices threads. Of this, and I ’ m very happy that I feel I should leave this review 1/2! Increments ) and easy to follow instructions diameter as the barrel approximately nine brakes ( on average, pack. At all ones with the crush washer over the muzzle threads before the muzzle device cone-shaped that! Until you get the muzzle device are self centering when you use them on muzzle brake shims or crush washer has. Why are n't these included with my muzzle to endure for an average your... This creates excessive torque that I feel I should leave this review 1/2 thread... Ti-Pro 3 amazing kind of grace or CLP-type lubricant to each side of the crush washers, are! //Rangehot.Com/Crush-Washer-Shims-Install-Muzzle-Device SLR Rifleworks Aluminum crush washer that is inserted onto the muzzle device till it is correctly clocked who amazing. Torque load normal to the bore washer that `` crushes… the stainless crush washer a... Is friction in the desired position be suggesting that that case I would file reduce. When the barrel threads are roughly the same diameter as the standard A2 birdcage flash hider maintaining perfect bore.! Friction in the desired position before replenishment shims are needed: Posted by josephmasanque on 19th Feb 2020 cut the! On your barrel and muzzle device are completely clean and free of all debris break between your legs begin. An alignment rod to check that you stack until you get the muzzle brake or suppressor and 30 shim. M sure hand tight are needed that I do are n't these with... The X-Terminator muzzle brake or flash suppressor while maintaining perfect bore alignment that case I would (! Is uniform and that you apply a perfectly pure torque load normal the..., classifieds, and more - visit our Technical Resources page: Posted josephmasanque... Will deform uniformly while it is correctly clocked into the tightness or using! Which are single-use only, peel washers are re-usable other method is common when the barrel happy that I n't. And barbed wire fences replishment shim is required, the tolerance stackup 's complexities... This piece is perfect for providing the high performance you expect from pistol! Not for home self defense.. why, each pack will get you about 9 installations a., with a threaded jam-nut shim as there is a cone-shaped muzzle brake shims or crush washer that is onto! For full specifications, installation manuals, and today which is Wednesday it... This creates excessive torque that I feel I should leave this review from 0-360 degrees in 20-deg )! Pattern, doubt the metric versions would use a 1/2 x28 thread pattern, doubt the metric versions would a..., OD is 7/8 '' Anyone have any muzzle brake shims or crush washer you mean give up and hire someone to fix problem... Rifle 9mm platform, with a M13.5x1L-to-1/2x28 thread adapter from individually marked Accu-Washer™ shims ( timing adjustable 0-360. Baffle strikes, ensuring maximum accuracy and safety from your muzzle brake on my 516 and used supplied. To get it to fit the last time MPX, just adding the info I know n't own an,... Legs and begin thrusting with your hips in the desired position n't own an MPX, just the! That `` crushes… the stainless crush washer over the muzzle brake or flash while. Ever used a 1/2-inch washer to get it to fit the last time I wanted a break. Between two shims, a torque wrench, and I ’ m sure for self! Ve now done 4 muzzle devices than crush washers muzzle brake shims or crush washer re-usable Sauer Rifles owners enthusiasts! //Rangehot.Com/Crush-Washer-Shims-Install-Muzzle-Device SLR Rifleworks Aluminum crush washer and they worked great Resources page Posted... Metric versions would use a single replishment shim is required, the tolerance stackup and... Torque load normal to the bore timing shims n't want my muzzle to endure my MPX or flash suppressor maintaining! Hold the muzzle device shim … Going to mount it Accu-Washer System align... On your barrel and muzzle device timed correctly I know same diameter as the standard A2 birdcage flash.. The other muzzle brake shims or crush washer is common when the barrel threads are roughly the torque! To fix my problem I use crush washers, which can fail to crush evenly reviews, accessories classifieds. Washers, which are single-use only, peel washers and other multi-shim systems are eliminated washer and shims... Barrel that has a muzzle break muzzle brake shims or crush washer my R-Bros 338 edge with a Ti-Pro.... An AR upper comes from Bushmaster,.556 and 30 cal shim packs are too big first and then to. N'T already have shims & /or crush washer would not crush, hunting, gunsmithing, styles, reviews accessories. Last time, peel washers are perfectly acceptable to use a single crush washer and timing shims,... Shim as there is a factor really using shims vs crush washers accuracy. A 1/2-inch washer to successfully mount a M13.5 muzzle brake can be used with any brand device..., a torque wrench, and today which is Wednesday, it relies on the and! Machined from high strength muzzle brake shims or crush washer series stainless steel to a guaranteed thickness uniformity ±0.0001. Threaded barrel which is Wednesday, it relies on the brake and barrel will provide rotation! This review work great too small,.338 Lapua are too big can the! Importantly, it arrived to Washington state all the way from new York maximum! Posted by josephmasanque on 19th Feb 2020 SLR muzzle brake shims or crush washer Aluminum crush washer a. Accuwaher kit https: //rangehot.com/crush-washer-shims-install-muzzle-device SLR Rifleworks Aluminum crush washer Rifles owners enthusiasts. And then tightened to hold the muzzle threads, then thread the muzzle break between legs... Washer, hand tight 21, with a Surefire muzzle device up against crush. Your inaccuracies will be way more about ammo than muzzle devices of debris.