Upper Receivers & Barrels

- Colt M4 LE6921 Carbine Upper Assembly, 14.5" 1/7 CL BBL, 5.56X45 NATO *NEW in BOX*
As low as $0.00
Out of stock - Colt M16A4 Flat Top Upper Assembly, 20" 1/7 Twist Chrome Lined BBL, 5.56X45 NATO *NEW*
As low as $0.00
Out of stock -