The CMMG ZEROED Picatinny end cap (brand part no. 22CA6E8) is made to cap off a .22LR AR build. Machined from 6061 aluminum, it closes the rear of the lower receiver so the build does not need a buffer tube. That gives the back of the gun a clean look, and the Picatinny interface gives you a way to attach accessories such as slings or folding braces and stocks. It is part of the ZEROED line of enhanced parts from CMMG. For a compact .22LR rimfire build or a conversion setup, it is a simple way to finish the rear of the lower.

Key Specifications

• The material is 6061 aluminum, a strong, lightweight alloy that suits a rear receiver cap.
• It is designed for .22LR builds, where there is no buffer tube to close the lower.
• It closes off the rear of the lower receiver, eliminating the need for a buffer tube.
• The end cap has a Picatinny interface for attaching accessories.
• It accepts slings and folding braces or stocks, giving the build more carry and configuration options.

Frequently Asked Questions

What is this end cap for? It caps off the rear of the lower receiver on a .22LR build, so a buffer tube is not needed to close the lower.

What can I attach to it? The Picatinny end cap lets you attach accessories such as slings or folding braces and stocks.

What is it made of? CMMG machines it from 6061 aluminum.

Buy the CMMG ZEROED Picatinny End Cap

A clean rear end makes a .22LR build easier to carry and easier to accessorize. Order it with other AR parts from our Lubbock, Texas gun shop for fast, direct shipping.