U10A4CBF

AR-10® B-Series Carbine Complete Upper Half Assembly

$786.00

The AR-10A4 Carbine Complete Upper Assembly features a double lapped, chrome lined barrel.  The MIL-STD 1913 rail on the upper receiver and the gas block allow rapid and repeatable interchange of removable iron or scope sights.

Each Armalite Complete upper assembly includes a forged upper receiver assembly, barrel assembly, bolt carrier group and charging handle assembly.  All complete upper assemblies are test fired as complete rifles before shipping.

Out of stock

Caliber
7.62X51 mm / .308
Barrel
16” double lapped, chrome lined / chrome moly, 4140 steel, M-4 feed ramps
Mid-length gas system
Rifling Twist
1:11.25” RH
Muzzle Device
Flash suppressor, threading: 5/8"-24
Front Sight Base
MIL-STD 1913 rail gas block. top of gas block is .398 (+/- .010) lower than top of receiver
Upper Receiver
Forged flat-top with MIL-STD 1913 rail 7075-T6 aluminum