Phase 5 Weapon Systems Inc CMSA Carbine Mini Stock Assembly AR15/AR10 Rifle

The Phase 5 CMSA Carbine Mini Stock Assembly is a fixed stock kit featuring the Universal Mini Stock (UMS) mounted on the HexOne buffer tube. The HexOne buffer tube is machined from 7075-T7 aluminum and the UMS from 6061-T6 aluminum. The HexOne tube is thicker and more rugged than mil-spec receiver extensions, making it suitable for 5.56 NATO, 300 BLK, or calibers like 7.62x39 and .308. For .308 use a dedicated .308 carbine buffer and spring. It also works with pistol caliber carbines such as 9mm, 40 S&W, and 45 ACP (buffer and/or spring may vary). Package contents include the CMSA Carbine Mini Stock Assembly, Castle Nut End Plate, Carbine Buffer, Phase 5 Enhanced Buffer Spring, and Allen Wrench.