A new range of Colonel Mustard muzzle brakes, flash hiders and accessories!
Finally! We've been trying to source jam nuts / lock nuts for the longest time! Use as an alternative to a crush washer to lock your muzzle brake or flash hider in place.
• 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
• Steel construction with smooth black Nitrate coating
• One piece