The ADM UIC-180 billet 7000 Series T6 lower receiver is outfitted with a Rear 1913 Rail Section to attach any 1913 Rifle Stock or Pistol Brace. This lower also includes our proprietary Ambidextrous magazine release, Ambidextrous bolt catch/ release lever, our dimpled take down and pivot pins and an installed mil-spec magazine release assembly. The UIC-180 Lower is coated in a Type III Teflon impregnated hard coat anodized or Cerakote finish. **The UIC-180 lower was designed specifically to be used with the Brownells BRN-180 Upper Receiver, however it May or May Not work with other similar uppers. American Defense will be testing compatibility with other similar uppers in the near fut Mfg: American Defense Manufacturing