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Anyone who has spun a muzzle device onto a barrel knows the crush washer is the little part that makes the whole thing sit right. The Aim Sports ACWA2 gives you a dozen of them at once, cut from steel and sized for .308 Win and 7.62 NATO AR-10 platforms. Instead of hunting for a single washer every time you want to change out a brake or flash hider, you've got a drawer full ready to go.
The job of a crush washer is simple but important. It compresses as you torque the muzzle device down, taking up the slack so the device clocks into the correct orientation and stays put under recoil. This 12-pack is built to fit most AR-10/LR barrel profiles and handles both flash hiders and muzzle brakes, so it covers the vast majority of .308 builds out there.
No gunsmithing tools beyond the basics are needed. Thread your muzzle device on with the fresh washer behind it, then torque to roughly 15 to 20 pound-feet to crush the washer and lock the device at the right position. Because a crush washer is a one-time-use part, that's exactly why the 12-count pack makes sense. Every time you pull a brake or flash hider and re-index it, you install a new washer rather than reusing a flattened one.
Builders and folks who like to experiment tend to appreciate having extras on the bench. If you're assembling uppers, changing barrels, or trying out different comps and brakes, running through washers is just part of the game. Steel construction means these hold up to repeated torque during the install, and buying by the dozen means you're not stuck waiting on a mail order when you're mid-build and one part short.
This washer is sized for .308 Win and 7.62 NATO AR-10/LR platforms and is made to fit most standard AR-10/LR barrel profiles. As long as your barrel uses the common large-frame thread pitch and your muzzle device matches, it should seat correctly. If you're running an unusual custom barrel, double-check the thread and shoulder before installing.
Slide the washer onto the barrel threads, thread on your flash hider or muzzle brake, and torque the device to roughly 15 to 20 pound-feet. As you tighten, the steel washer crushes down and locks the device at the proper clocking position. No gunsmithing tools beyond a wrench are needed for a typical install.
Crush washers are meant for single use. Once the washer has been compressed during install, it won't reliably index or seal the same way a second time. That's the whole reason this comes as a 12-pack, so you can grab a fresh one every time you swap or re-time a muzzle device.
If you build uppers, change barrels, or like to test different brakes and flash hiders, you burn through washers fast since each install calls for a new one. Buying by the dozen keeps spares on the bench so a single flattened washer never stalls your project. It's a handy stash for anyone who tinkers with .308 builds regularly.
| UPC | 815879013927 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | ACWA2 |
| Caliber/Gauge | Crush Washer |
| Length | Crush Washer |
| Model | |
| Sights | Steel |
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