Made in the USA, San Tan Tactical's Lite Lower Receiver has the same great aesthetics as San Tan's standard STT-15 Receiver but incorporates a significant weight reduction. It features a 1.38" integrally machined magazine well flare, safety selector markings, set screw trigger creep adjustment and upper take down tension adjustment, captured rear take down pin detent and spring, oversized winter trigger guard, and a no roll pin design. It assembles using the included threaded dowel screw. The STT-15 Lite Lower does not included STT Ultra Grip Kit.