22 Long Rifle/ .17 Caliber only M22/50 Muzzle Brake is precision machined from heat treated 7075 aircraft aluminum (not 6061) and mil-spec type 2 hard anodized for maximum lightweight strength and durability. The M22/50 Muzzle Brake is threaded 1/2-28 TPI and will thread onto any .22LR 10/22 barrel that is correctly threaded. Also available in a pin on version for the standard factory tapered barrel. A crush washer (not supplied) is recommended so that you can set the position of the muzzle brake based on the thread timing.
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