The ambidextrous bolt release, selector lever, and magazine release offers left-handed users the ergonomic advantages inherent to AR15-based controls. Marked 'SR-15' and '5.56mm'. Partially stripped with ambidextrous controls, trigger guard installed and takedown pins included. Additional components and assembly required. These are sold as a cosmetically blemished receiver. Factory support and warranty only covers functional issues and not cosmetic issues. Returns are not accepted for this item due to cosmetic issues.