The RISE Premium Lower Parts Kit for AR-15s isnt your standard LPK. It includes all the essential pins, springs, and hardware to complete your lower, but what sets it apart are the premium RISE Armament components that elevate your rifles performance and usability from the start.Features :AR-15 Magazine Catch (x1)AR-15 Trigger Pins (x2)Safety Detent Pin (x1)Safety Detent Spring (x1)Takedown/Pivot Pin Detents (x2)Springs for Takedown/Pivot Detents (x2)Spring for Mag Catch (x1)Bolt Catch Spring (x1)Bolt Catch Plunger (x1)