If you plan on going the standard (and the easiest) route with the muzzle end of your .223 or 5.56mm chambered AR by installing a muzzle device, you'll need a crush washer. This is the one you need. You just slide it onto the threading of your barrel, tapered end first, crowned end facing out, screw on your muzzle brake, compensator, or flashhider until it's hand-tight and then use an armorer's wrench to time it in quarter turns at a time, backing it off after each turn, until the device it aligned properly. Yup, it's that simple. See below for more info.
- CNC machined high quality steel construction
- Designed for 1/2"x28 Thread Pitch
- Black oxide finish
- Fits: AR-15
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