Quickly and easily time and install your muzzle device firmly in place without the hassle or expense of crush washers with our Muzzle Speed-Lock Kit. Locking nut replaces the crush washer to securely lock your device in place and is reusable and can be repositioned as needed. Also, prevent unwanted damage to your barrel's thread when muzzle device not in use and give your muzzle an aggressive look with the included thread protector. Precision machined from 303 stainless steel for strength and resistance against corrosion. 2 thread sizes and 4 finishes to choose from. Kit includes: thread protector, locking nut and spanner wrench.

To install, thread on locking nut, position muzzle device as needed, use wrench to reverse locking nut against muzzle device and tighten together.