16" M4 Phosphate Barrel 4150V Chrome Moly 1 in 9" twist rate 2.23 Wylde or 5.56 Nato Chamber HPT/MPI M4 Feed ramps Low Profile Micro Gas Block Stainless gas tube Direct Gas Impingement Mil-spec A2 Flash Hider Free Float 12" Ultra Lite Keymod Rail System Forged Upper Receiver with Forward Assist, Ejection Door and Shell Deflector
This upper comes completely assembled.
***no BCG or Charging Handle***
