What's that screw? CMMG P3 explained

Published on August 12, 2022
Duration: 1:00

This guide details the installation and function of the CMMG P3 (Personal Position Preset) Screw System. The P3 screw, found in the Zeroed grip's storage compartment, installs into the Fastback receiver extension. It allows users to set a predetermined stop position for adjustable stocks or braces like the RipStock and RipBrace, enhancing consistent shouldering. The guide includes specific tool requirements and adjustment methods for both the RipStock and RipBrace.

Quick Summary

The CMMG P3 (Personal Position Preset) Screw System installs into the Fastback Receiver Extension, creating a stop point for adjustable stocks and braces like the RipStock and RipBrace. Found in the Zeroed Grip's storage, it requires a 7/64" hex wrench for installation, ensuring a consistent length of pull for improved accuracy and ergonomics.

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 System?

The CMMG P3 (Personal Position Preset) Screw System is an accessory designed for CMMG's Fastback Receiver Extension. It allows users to set a specific, predetermined stop point for their adjustable stock or brace, ensuring a consistent length of pull every time.

How do you install the CMMG P3 Screw?

To install the P3 screw, first locate it, often found within the storage compartment of a CMMG Zeroed Grip. Then, using a 7/64" hex wrench, thread the screw into one of the designated holes on the bottom of the Fastback Receiver Extension.

What is the purpose of the P3 screw on CMMG firearms?

The P3 screw serves as a physical stop, preventing an adjustable stock or brace from collapsing beyond a user-defined 'home' position. This ensures a repeatable length of pull, which is beneficial for accuracy and comfort, especially when quickly shouldering the firearm.

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

For the RipStock, a 1/8" hex wrench is used to remove a separate adjustment screw. For the RipBrace, you simply pull down the adjustment lever to allow it to slide past the P3 screw, then release the lever at your desired position.

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