Geissele MK4 Federal 10" Rail in FDE (please note newer gen has longer bottom picatinny (picture is first gen rail))
11.5" Colt heavy barrel 1/7 556 chrome lined bore and chamber .070 gas port
Geissele Bomb Proof Gas Block Pinned
Colt M4 Upper Receiver
Precision Reflex Carbine Length Gas Tube
| UPC | |
| MFG | Custom |
| MODEL | 11.5" HRT MK4 Federal - FDE |
| TITLE | 11.5" HRT MK4 Federal - FDE |