Colonel Mustard thread protector. An elegant and useful item to protect your threaded barrel for when you don't want to use a muzzle brake or flash hider. Screws onto standard AR-15/M4/M16 ½" x 28 threaded barrels. This thread is also commonly used on .22 LR, .22 Mag and .17 HMR rifles. CMJLN-T001MB.
Part Number: CMJLN-T001MB