For AR15 ONLY.The most commonly used parts to complete a custom AR15 rifle and the same parts we use in our shop on our custom AR15 rifles. These quality parts are built by USGI contractors to meet or exceed Military Specifications. This kit includes a right hand safety selector.NOTE - There are no fire control parts (Hammer, Trigger, Disconnector, Springs) included in this kit.Parts Included: Bolt Catch Bolt Catch Plunger Bolt Catch Roll Pin Bolt Catch Spring Magazine Catch Magazine Catch Spring Magazine Catch Button Pivot Pin Takedown pin 2x Pivot/Takedown detents 2x Pivot/Takedown detent springs Safety Detent Safety Detent Spring Semi-auto Safety selector (Right Hand) Trigger Guard (Aluminum GI) Trigger Guard Roll Pin 2x Trigger/Hammer Pins