Wilson Combat Bullet Proof Bolt Release WC-10; Bolt Catch Screw for WC-10 Billet Lower; Bolt Catch Plunger, Bolt Catch Roll Pin, Bolt Catch Spring; Magazine Catch, Magazine Catch Spring; Magazine Catch Button; WC-10 Pivot Pin, WC-10 Takedown pin; 2x Pivot/Takedown detents, 2x Pivot/Takedown detent springs; Safety Detent, Safety Detent Spring; Semi-auto Safety selector (Right Hand); 2x Trigger/Hammer Pin