CMMG Fastback Receiver Extension Mil-Spec 101119 4 3/8 x 3 1/8

4 3/8 x 3 1/8 Oval Generic pin-in holes Snap closure Clips on 1 3/4 belt

this versatile shirt delivers a polished look with the rugged durability you expect from 5

allowing for maximum mobility and ease of movement

Adjustable Fit: The Hook & Loop design allows for easy adjustments

CMMG Fastback Receiver Extension Mil-Spec 101119 4 3/8 x 3 1/8Deploy your favorite stock (or brace) faster than ever. The Fastback Receiver Extension attaches to any firearm that accepts a Mil Spec receiver extension (buffer tube). Once installed, this allows you to easily pull the stock (or brace) back to an extended position, without pressing a release button.