Phase 5 Weapon Systems CMSA Carbine Mini Stock Assembly Black Aluminum for AR15/AR10

The Phase 5 Carbine Mini Stock Assembly (CMSA) is a combo kit featuring Phase5’s Universal Mini Stock (UMS) and HexOne buffer tube for an excellent compact fixed stock solution. The UMS is also compatible with a number of other buffer tubes including Mil-spec carbine receiver extensions and most round tubes it was designed to complement the sturdy HexOne buffer tube. The UMS and HexOne are precision machined in house from USA sourced raw billet aluminum. The HexOne buffer tube is cut from 7075-T7 and the UMS is 6061-T6. The buffer tube features a hexagonal design that is much thicker and rugged than a mil-spec receiver extension tube making it perfect for 5.56 NATO 300 BLK or even calibers like 7.62×39 and .308. It will also work with pistol caliber carbines such as 9mm 40 S