SPECS: Receiver - 7075 T6 aluminum, hardcoat anodized, Teflon-coated, black. Pistol Grip – Injection-molded polymer, black. Accepts AR-style .308/7.62mm upper receivers and magazines from DPMS, Bushmaster, Patriot Ordnance Factory, and Remington Arms. Fixed - Zytel, A2-style buttstock, black. Collapsible – Polymer M4-style buttstock, black. Stripped – Matte black, hard-anodized finish. .154" (3.9mm) hammer/trigger pin holes. .275" pivot/takedown pin holes. FFL required for purchase.