The Geissele Standard Lower Parts Kit includes all the internal parts necessary to complete or rebuild your lower receiver. This quality mil-spec kit features an improved safety detent and our specially designed Posi-Lock safety, which provides the end user a satisfying and positive tactile feedback when engaging the safe or fire position.

1. Takedown Pin & Pivot Pin Detents (2)
  2. Takedown Pin & Pivot Pin Springs (2)
  3. Takedown Pivot Pin
  4. Bolt Catch Plunger
  5. Bolt Catch Spring
  6. Bolt Catch Coiled Pin
  7. Mil-Spec Bolt Catch
  8. Safety Detent
  9. Buffer Retainer
10. Buffer Retainer Spring
11. Safety Detent Spring 
12. Takedown Pin
13. Magazine Release Button
14. Magazine Release Spring
15. Geissele Posi-Lock Safety 
16. Magazine Catch
17. Coiled Trigger Guard Pin
18. Mil-Spec Trigger Guard