Aero Precision APAR501103C STS Receiver Multi-Caliber Black Anodized Finish 7075

The STS (Short Throw Safety) AR15 Stripped Lower Receiver is the perfect lower to start your build. Custom designed markings accept short-throw safety selectors while maintaining mil-spec dimensions and correct component interface. Selector markings will work with 45, 60 or 90 degree safety selectors. STS lowers are marked and milled to accept short-throw safety selectors, but will work with standard selectors as well. Rear takedown pin detent hole is threaded for a 4-40 set screw. Works with standard AR15 components and magazines. Made in the USA. NOTE: Requires a lower parts kit, buffer & stock of your choosing to complete. Type: Stripped Gun Model: AR-15 Gun Type: AR Platform Caliber: Multi-Caliber Material: 7075-T6 Aluminum Finish: Black Anodized Trigger: None