Colt M4 16inch HBAR upper

Colt M4 16in HBAR upper (5.56) with an Aimpoint RDS that is ZEROd at 36 yards as well as the back up sights. Rear MBUS added. Q Cherry Bomb compensator. BCM extended charging handle. Streamlight taped around classic hand-guard that can easily be removed. Overall value is $1,500 with everything listed. This thing has little to no recoil. Im mainly looking for a trade for an 18 -20 inch AR15 upper chambered in 5.56. Open to cash offers