Vortex® CRS Shim for Viper™ Zero Stop Scopes
Vortex® CRS Shim for Viper™ Zero Stop Scopes was designed for Viper PST, HST, and HSLR elevation turrets. The CRS (customizable rotational stop) shims allow you to quickly and easily return to your zero point. CRS Shims are installed after sight-in and cause the turret to stop after turning slightly past your zero point. These shims are easy to install and will maximize your optics experience.
***Note: Each package contains one shim