What's that screw? CMMG P3 explained
The CMMG P3 screw, or Personal Position Preset, allows users to set a specific stop point for their rifle's stock or brace. It's stored in the Zeroed grip and installed into the Fastback receiver extension using a 7/64" hex wrench. Adjusting the RipStock requires a 1/8" hex wrench, while the RipBrace uses its adjustment lever to clear the P3 screw.









