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.

Type: Stripped
Gun Model: AR-15
Gun Type: AR Platform
Caliber: Multi-Caliber
Material: 7075-T6 Aluminum
Finish: Black Anodized