Description
5.56 NATO Complete Upper Receiver – CE Rail
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 5.56 Complete Upper features our US-made CE Rail with mil-spec Type III Hard-Coat Anodizing.
Optional: Black Nitride M4-cut BCG.
See our 15″ CE Rail HERE.
Specs
- Caliber: 5.56×45 NATO/.223 Remington
- Barrel Length: 16.5“, 10.5“, 7.5“
- Barrel Material: 4150V Chrome Moly Vanadium, QPQ finish
- Barrel Twist Rate: 1:8
- Feed Ramps: M4, NiB finish
- Muzzle Thread Pitch: 1/2×28
- Gas System: Pistol-length (7.5″), Carbine-length (10.5″, 16.5″)
- Journal Size: 0.750″
- Muzzle Device: A2 Flash Hider
- Handguard: XTS CE Rail
- Charging handle: Mil-spec
Check out our blog for more info on parts compatibility, build help, assembly guides, and more!
XTS machines the CE rail in the USA from 7075-T6 aluminum and applies a mil-spec Type III Class C hardcoat anodized finish for maximum durability. This lightweight, rugged handguard includes M-LOK slots at the 3, 6, and 9 o’clock positions for flexible accessory mounting. At the 12 o’clock position, it features a front section of Picatinny, a center stretch of M-LOK, and another Picatinny section at the rear, giving users full compatibility with both modern and traditional setups.
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