Optimize your firearm's performance with the Wilson Combat SP-RTMB-SHIMKIT2, engineered for seamless replacement of Rapid Thread and Flat Back shims. This 1/2" x 28 thread pitch shim kit is designed to enhance the Whisper Suppressor interface, offering precision ground shims for an impeccable fit and efficient firearm functionality. Designed for the Whisper Suppressor interface 1/2" x 28 thread pitch shim kit specifically designed for .22 caliber muzzle threads Precision ground shims provide a perfect fit Fast and easy installation Compatible with Wilson Combat Rapid Thread and Flat Back attachments Experience improved accuracy and reliability with this high-performance shim kit.