(Part 12) Gas Tube Roll Pin

(part 19) Pistol Grip Lock Washer

(Part 17) Ejection Port Cover Hinge Pin Clip

(Parts 5 & 12) Rear Sight Ball Bearing, 3 required

(Part 8) Front Sight Spring

(Part 4) Front Swivel Rivet

(part 11) Detent Spring

(part 12) Takedown Detent

(part 13) Magazine Catch Spring

(part 16) Disconnector Spring

(part 6) Bolt Catch Spring

(part 21) Selector Spring/Ejector Spring

(part 18) Pistol Grip Screw

(Part 23) Forward Assist Spring

(Part 21) Forward Assist Pin

(Part 19) Ejection Port Cover Spring

(Parts 4 & 13) Rear Sight Springs.

(Part 7) Front Sight Detent

(Part 3) Front Sight Taper Pin (2 required)

(part 9) Bolt Catch Roll Pin

(part 22) Selector Detent

(part 28) Buffer Detent Spring

(part 29) Trigger Guard Pin

(Part 11) Rear Sight Elevation Knob Spring

(Part 8) A2 Rear Sight Flat Spring

(Part 12) Bolt Carrier Key Screw

(Part 4) Ejector Roll Pin

(part 7) Bolt Catch Detent

(part 23) Trigger / Hammer Pins

Solves feed problems when replacing the old batch follower.  Fits in the new 7, 10 and 30 round mags, and older 30 round mags.