Wilson Combat Rapid-Thread Muzzle Brake, Whisper Suppressor, Shim Kit, 1/2 x 28 in ID, SP-RTMB-SHIMKIT2

Replacement shim kit for Wilson Combat Rapid Thread Attachment (SP-RTMB) and Flat back attachment (SP-RTMBFB-30); This replacement shim kit includes all shims to properly time your Whisper Rapid Thread Attachment to your rifle barrel; Click Here for Shim Kit Instructions;