Product Description
MCS AR-15 12.5″ 5.56 NATO BUILT UPPER W/ PHASE1 MUZZLE DEVICE
- 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
5.56 NATO Complete Upper Receiver (CU-12-P1)
Our Complete 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. Every upper is assembled right here in Arlington, Texas.
The CU-12-P1 Complete Upper features our CE Rail in classic black, with mil-spec Type III Hard-Coat Anodizing.
Optional: Black Nitride M4-cut BCG.
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: PHASE1 2pc Muzzle Device
- Handguard Length: 12″
- Charging handle: Mil-spec
