Colt M4 / AR15 lower parts kit (LPK), less grip and fire control, 2021 production

ships from our shop in 3 to 8 days (+/-)
Current Production:
often harvested from full rifles

Colt partial lower parts kit (LPK) for M4 and AR15: produced in 2021 or after

Lower Parts, less fire control and less grip (and screw & washer)

These are either factory new, or lower receiver take-off new and repackaged.

Contains the lower parts kit for the Colt M4 semi-automatic receiver, less the grip and screw and also less fire control (trigger group).  This is convenient if you are looking for the best in solid performing lower parts, but are using a trigger upgrade kit, like Geissele, LMT, KAC, etc., and also have an upgraded grip. 

This newer style safety with the main lever a little shorter and not extending into the middle of the axle, and with the directional arrow on the left side.

Colt standard safety selectors are one of the only safety selectors which can be installed from the left or the right, so while technically not ambidextrous, this safety can be installed on the left side or the right side with equal operating effectiveness.

All 100% Genuine new Colt parts.  May contain oil (that is good)


General Parts

  • Bolt Catch
  • Bolt Catch Plunger
  • Bolt Catch Spring
  • Bolt Catch Roll Pin
  • Mag Release
  • Mag Release Button
  • Mag Release Spring
  • Buffer Retainer
  • Buffer Retainer Spring
  • Safety Selector
  • Safety Detent 
  • Safety Detent Spring
  • Trigger Guard
  • Trigger Guard Roll Pin
  • Takedown Detent Springs (2)
  • Takedown Detents (2)
  • Takedown Pins (front/rear)