About SSA-15-LSOur ambidextrous safety selector is a superior drop-in replacement for all mil-spec safeties (AR platform 5.56 & 7.62) and is meticulously machined from the finest materials to provide the smoothest operation and a crisp positive feedback. The levers are machined from 7075 aluminum and are hard coat anodize (available in 4 different colors) after a heavy acid etch process which dulls the machined surface and provides a superior protective finish. The core or shaft is a hardened 416 stainless steel which is highly corrosion resistant and very strong. Our unique lobular interface between the lever and the shaft provides a solid connection and allows the lever to be installed in 6 different positions (not just two like other safeties) for the the ultimate experience in user customization. The engraved markings on the shaft simplify the installation of the 60 or 90 degree throw options. Quality USA made wrench included. Weight: .46 oz. w/Hardware Material: 7075 Aluminum, 416 Stainless Steel Size: 1.45 x 1.05 x .45 Fits most AR pattern lowers receivers