M4 Telescoping Stock Assembly W/ 3 position Recoil Tube and pistol grip

M4 Complete Bolt Group Black Nitride Finish

M4 Complete Trigger Group

M4 Bolt Group WO/ Strut

M4 Skeletonized Stock

M4 Piston set set of 2

M4 Pistol Grip Fixed Stock

M4 Rear Sight Assembly

M4 Standard Stock

M4 Trigger W Disconnector

M4 Bolt Group 

M4 Gas Plug Assembly x2

M4 Recoil Tube Assembly

M4 Hammer

M4 Foregrip set (2)

M4 Accessory Mounting Rail

M4 Carrier Drop Lever

M4 Magazine Cap