American Defense Mfg UIC Stripped Lower 5.56x45mm, Black

The ADM UIC billet 7075-T6 lower receiver is engineered with a type III teflon-impregnated hardcoat anodized finish. It incorporates a proprietary ambidextrous magazine release, ambidextrous bolt catch and release lever and dimpled take down and pivot pins. The magazine well is reinforced with ribs, enhancing its strength by 40% compared to mil-spec forged counterparts, with a minimal weight increase of only half an ounce. The trigger guard is designed to accommodate winter gloves without requiring adjustments. The lower receiver features radii and chamfers throughout, showcasing advanced CNC manufacturing capabilities. A concealed 20 degree competition-style magazine well facilitates rapid magazine changes. An integral upper/lower tension adjustment screw allows users to adjust for tolerances between upper receivers and preferred lowers. The UIC lower receiver kit is shipped with all proprietary ambidextrous controls pre-installed, including dimpled take down/pivot pins. **Note: The design of the ambidextrous bolt catch/release is incompatible with certain triggers that utilize anti-rotation pins with external screws or plates. A low head pin has been developed for use with CMC triggers. Standard GI type triggers, drop-in triggers using standard pins and Geissele triggers are compatible with this lower receiver. The American Defense UIC stripped lower is designed to accommodate 5.56 caliber ammunition and includes takedown pins