Allen Engineeringmuzzle brake is used in conjunction with their suppressors and mounts. Kit including barrel fitting, thread protector, and crush washer.

.22 Cal. (5.56mm/.223) 1/2-28 tpi .866" O.D.

Includes: 

Muzzle Brake
Thread Protector
Crush Washer
Long Collar w/Set Screw

UPC
MFG Allen Engineering
MODEL MK 12 MOD 1 THREADED MUZZLE BRAKE AND COLLAR
TITLE Allen Engineering MK 12/SPR Mounting Kit - Includes Brake and Collar

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