Product Description
MCS AR-15 12.5″ 5.56 NATO BUILT UPPER 12″ RAIL - BLACK
12.5″ 5.56 NATO upper with 4150V CMV QPQ barrel and carbine-length gas system.
Assembled in Arlington, TX, with a forged receiver and 12″ handguard.
Type III Hard-Coat anodized finishes, optional Black Nitride BCG.
Our MCS Barreled Uppers are fully assembled in-house and ready to pin to your lower receiver. We use forged American-made receivers and US-made barrels—carefully selected for quality, reliability, and consistency.
The CU-125-12 Complete Upper features our ADZ Rail in classic black, with mil-spec Type III Hard-Coat Anodizing.
Specs:
- Caliber: 5.56×45 NATO/.223 Remington
- Barrel Length: 12.5“
- Barrel Material: 4150V Chrome Moly Vanadium, QPQ finish
- Barrel Twist Rate: 1:7
- Feed Ramps: M4, NiB finish
- Muzzle Thread Pitch: 1/2×28
- Gas System: Carbine-length
- Journal Size: 0.750″
- Muzzle Device: A2 Flash Hider
- Handguard Length: 12″
- Charging handle: Mil-spec
