Primary Weapons Systems MK118 AR-15 Complete Upper Assembly 223 Wylde 18" Barrel KeyMod Rail Black

Primary Weapons 2M118UA0B MK118 223 Wylde 18" 4140 Steel Threaded Black Bbl Finish
PWThe Primary Weapons Systems MK118 upper assembly features a mid length gas system. The 4140 steel barrel is 18" long and chambered for .223 Wylde, allowing the gun to shoot 5.56 NATO or .223 Remington with equal accuracy. The barrel is threaded and tipped with a muzzle brake. The upper receiver is made of 7075-T6 aluminum. The upper has a free float KeyMod rail. Just pin onto your complete lower and add your favorite optics. This will make a great AR-15!

Specifications and Features
Primary Weapons Systems 2M118UA0B
.223 Wylde
18" 4140 steel threaded barrel
1:8" twist
Muzzle brake
7075-T6 flat top upper receiver
Mid length gas system
Free float KeyMod rail
Black