What's that screw? CMMG P3 explained

Published on August 12, 2022
Duration: 1:00

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.

Quick Summary

The CMMG P3 screw, or Personal Position Preset, is designed to set a specific stop point for your AR-15's stock or brace. It's stored in the Zeroed grip and installed into the Fastback receiver extension using a 7/64" hex wrench for a consistent length of pull.

Chapters

  1. 00:00Locating the P3 Screw
  2. 00:10Defining P3 (Personal Position Preset)
  3. 00:30Installation and Tools
  4. 00:40Adjusting RipStock and RipBrace

Frequently Asked Questions

What is the CMMG P3 screw?

The CMMG P3 screw stands for Personal Position Preset. It's a small screw installed into the Fastback receiver extension that acts as a physical stop, allowing you to quickly set your stock or brace to a specific length of pull.

Where is the P3 screw stored?

The P3 screw is typically found inside a small baggie within a hidden compartment located in the bottom of the CMMG Zeroed pistol grip. This keeps it secure and readily accessible when needed.

What tools are needed to install the P3 screw?

To install the P3 screw into the Fastback receiver extension, you will need a 7/64" hex wrench. This allows you to thread it into the designated hole to set your preferred furniture position.

How do you adjust a RipStock or RipBrace with the P3 system?

For the RipStock, a 1/8" hex wrench is needed to remove a separate adjustment screw. For the RipBrace, you simply pull down the adjustment lever to bypass the P3 screw and set your desired length.

Related News

All News →

More Gunsmithing & DIY Videos You Might Like

More from CMMG

View all →