The Wilson Combat AR-10 Small Parts Lower Receiver Parts Kit includes most of the parts to complete a custom WC-10 rifle lower receiver and the same parts Wilson Combat uses in the shop for custom WC-10 style rifles. This kit includes a right hand safety selector. As WC-10 style lowers have an integral trigger guard, no trigger guard or pin included. There are no fire control parts (Hammer, Trigger, Disconnector, Springs) included in this kit. Note These parts are intended for use in a Wilson Combat WC-10 lower receiver only. Parts Included:Wilson Combat Bullet Proof Bolt Release WC-10Bolt Catch Screw for WC-10 Billet LowerBolt Catch PlungerBolt Catch Roll PinBolt Catch SpringMagazine CatchMagazine Catch SpringMagazine Catch ButtonWC-10 Pivot PinWC-10 Takedown pin2x Pivot/Takedown detents2x Pivot/Takedown detent springsSafety DetentSafety Detent SpringSemi-auto Safety selector (Right Hand)2x Trigger/Hammer Pins