AR-15 1/2 Inch Crush Washer - Stainless Steel
The United Defense AR-15 1/2 Inch Crush Washer is a stainless steel washer designed to install between your barrel shoulder and muzzle device on any AR-15 with 1/2-28 threads. It compresses under torque to give flash hiders, muzzle brakes, and compensators a solid base to seat against while allowing you to time the device to the correct clock position. Stainless construction resists corrosion and heat better than standard plain-steel washers, and the 0.688" outer diameter matches the 0.750" barrel shoulder found on most AR-15 barrels. A must-have spare for anyone running a threaded 5.56/.223 build or swapping muzzle devices on the bench.
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- SKU
- UD-GP-AR15-12CW-SS
$1.99
Description
Features
- 1/2x28 Thread Compatibility — Fits standard AR-15 barrels with 1/2-28 TPI muzzle threads, the industry standard for .223 Rem and 5.56 NATO platforms.
- Stainless Steel Construction — Corrosion-resistant stainless steel stands up to heat, weather, and powder fouling far better than plain steel washers.
- Proper Muzzle Device Timing — Crushes uniformly under torque to let you index flash hiders, muzzle brakes, and compensators to the correct clock position.
- Secure Locking Function — Acts as a lock washer once compressed, keeping your muzzle device tight under sustained fire and recoil.
- 0.688" Outer Diameter — Matches the 0.750" barrel shoulder profile used on the vast majority of AR-15 barrels.
- Single-Use Design — Inexpensive enough to swap every time you remove a muzzle device, ensuring proper torque on every reinstall.
- Factory New — Shipped factory new and ready to install with a standard armorer's wrench.
- Universal AR-15 Fitment — Works with A1, A2, birdcage flash hiders, and most aftermarket muzzle brakes and compensators threaded 1/2-28.
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Customer Reviews
Top customer reviews
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Quality component, protects barrel threads alwaysThis is a solid stainless crush washer for AR-15 barrel assembly. The factory new condition is perfect and the stainless steel is obviously quality material. Protects your barrel threads when you're torquing down the flash hider which is important.
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