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Timing a muzzle device doesn't have to be complicated. The Aim Sports ACWA1 crush washer handles the job for you by flexing under torque to let your flash hider or muzzle brake settle into the right position. These steel washers are the standard choice for AR-15 builds because they give you plenty of rotation room to dial in perfect timing while keeping solid pressure on your device once it's locked down.
Slip the washer onto your barrel threads, hand-tighten your muzzle device, then use a wrench to rotate it to your desired position. The ACWA1 will compress as you tighten, giving you roughly 450 degrees of adjustment range to nail the timing without complicated calculations or extra tools. No gunsmithing required. Just torque to about 15-20 foot-pounds once your device is indexed the way you want it.
Getting 12 washers in one pack means you're covered whether you're running one barrel or five. Unlike peel washers or shims that might come partially used, having a full set of dedicated crush washers means spares when you swap devices or start fresh builds. Since crush washers are designed for single use (they crush permanently once torqued), having extras on hand keeps you moving without waiting for resupply.
These washers are machined for .223 Rem / 5.56 NATO and fit standard 1/2×28 threads found on most modern AR-15 barrels. The steel construction stays consistent across installations, and they work reliably with both compensators and flash hiders. Whether your barrel is mil-spec or something else, the ACWA1 fits most profiles without any modification.
No. Crush washers are single-use items that permanently compress when torqued down. Once you tighten a muzzle device, the washer is crushed and won't provide the same support if you try to reuse it. This is why the 12-pack gives you plenty of spares for swapping devices or troubleshooting different timing positions.
You get roughly 450 degrees of adjustment range, which is more than enough to dial in proper timing on most devices. Hand-thread your muzzle device first, then use a wrench to rotate it to the correct position while the washer compresses under torque. This flexibility makes timing simple without needing shims or jam nuts.
The ACWA1 is designed for .223 Rem / 5.56 NATO barrels with 1/2×28 threads and fits most standard AR-15 barrel profiles. Check that your barrel has the standard muzzle thread size before ordering. If you have a non-standard barrel profile, confirm thread compatibility with your barrel manufacturer.
All you need is a wrench or muzzle device installation tool and a vise to hold your barrel steady. No gunsmithing required. Simply place the washer on the threads, hand-tighten your muzzle device, then use the wrench to rotate it into proper timing position while torquing to about 15-20 foot-pounds.
| UPC | 815879013910 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | ACWA1 |
| Caliber/Gauge | Crush Washer |
| Length | Crush Washer |
| Model | |
| Sights | Steel |
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