Anderson complete ar-15 lower receiver black closed FEATURES-Standard Mil Spec Lower Receiver-Closed Trigger-Standard M4 Grip-Anderson Lower Parts Kit-6 Position Buffer Tube Kit-This Complete Lower Receiver Comes w/ Parts Installed & Ready to Attach an Upper-FFL Required for Purchase Other Features: Standard ar-15 lower, includes all lower parts and a 6 position butt-stock, fully assembled ready for a mil-spec upper.Integral trigger guard (closed)