16" 5.56 Phosphate Carbine M-LOK M4 Upper Assembly
Battle-Tested Reliability with Classic M4 Styling – Built for Everyday Performance.
Out of stock
16″ 5.56 Phosphate Carbine M-LOK M4 Upper Assembly
The 16″ 5.56 Phosphate Carbine M-LOK M4 Upper Assembly combines rugged design and proven functionality, perfect for shooters building a dependable, hard-use AR-15. Featuring a 16-inch M4-profile barrel with a durable mag phosphate finish and a carbine-length gas system, this upper delivers the classic feel and performance trusted by professionals. It’s built on a forged mil-spec upper receiver and paired with quality American-made M-LOK handguards, offering modularity and strength where it counts. The nitrided A2 flash hider and low-profile steel gas block complete the package, while meticulous assembly practices—like using Permatex 242 and AEROSHELL 33MS—ensure long-term reliability. Whether you’re equipping a range rifle or prepping a duty-grade build, this upper is ready for the challenge and backed by a limited lifetime warranty.
Specifications
- Barrel Finish: Mag Phosphate
- Barrel Profile: M4
- Cartridge Compatibility: 5.56 NATO
- Barrel Length: 16″
- Gas System Length: Carbine
- Twist Rate: 1:9
- BCG / Charging Handle: Not Included
- Handguard: M-LOK (style may vary)
- Warranty: Limited Lifetime
Guaranteed Sub-MOA performance with match-grade ammo and proper shooting technique
Made in the USA
| Weight | 64 oz |
|---|---|
| Dimensions | 28 × 5 × 5 in |
| Barrel Finish | Mag Phosphate |
| Barrel Profile | M4 |
| Cartridge Compatibility | 5.56 NATO |
| Barrel Length | 16 |
| Gas System Length | Carbine |
| Twist Rate | 1:9 |
| BCG / Charging Handle | Not Included |
| UPC | 26860 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.