Black Rifle Depot

16″ 5.56 Phosphate Carbine M-LOK M4 Upper Assembly

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SKU:
26860
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  • 16″ 5.56 Phosphate Carbine M-LOK M4 Upper Assembly
  • 16″ 5.56 Phosphate Carbine M-LOK M4 Upper Assembly
  • 16″ 5.56 Phosphate Carbine M-LOK M4 Upper Assembly
  • 16″ 5.56 Phosphate Carbine M-LOK M4 Upper Assembly
  • 16″ 5.56 Phosphate Carbine M-LOK M4 Upper Assembly
MSRP: $349.99
$294.95
— You save $55.04

Description

16″ 5.56 Phosphate Carbine M-LOK M4 Upper Assembly

Battle-Tested Reliability with Classic M4 Styling – Built for Everyday Performance.

The 16″ 5.56 Phosphate Carbine M-LOK M4 Upper Assembly brings together 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 the use of 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

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Additional Information

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
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