This lower receiver parts kit for AR-15 is a great addition to your AR15 build. This lower parts kit is for you, from amateur gun builders to seasoned expert gunsmiths. NOTE: The fire control group and grip are NOT included. Kit contains the following:

1. Bolt Catch
2. Bolt Catch Plunger
3. Bolt Catch Spring
4. Bolt Catch Roll Pin
5. Mag Release
6. Mag Release Button
7. Mag Release Spring
8. Buffer Retainer Spring
9. Safety
10. Buffer Retainer
11. Safety Detent Spring
12. Safety Detent
13. Trigger Guard
14. Trigger Guard Roll Pin
15. Takedown Detent Springs
16. Takedown Detents
17. Takedown Pins.