10.5" 5.56 NATO 1:7 Twist 4150V Black Nitride Carbine Barrel

10.5″ 5.56 NATO 1:7 Twist 4150V Black Nitride Carbine Barrel

The 10.5″ 5.56 NATO Carbine Barrel from Black Rifle Depot is a rugged, high-performance option for AR pistol or SBR builds. Precision-machined from 4150 CMV steel, this barrel is stress-relieved after rifling and treated with a durable black nitride finish by H&M for corrosion resistance and extended barrel life.

With a 1:7 twist rate, it stabilizes a wide range of 5.56 NATO bullet weights, while the carbine-length gas system ensures reliable cycling under hard use. Each barrel is drilled, reamed, and contoured on a robotic production line, with strict QC standards that ensure tight tolerances and consistent accuracy. Finished with an M4 feed ramp extension, this barrel is ready for duty-grade performance at an unbeatable value.

Specifications

• 10.5″ barrel length
• 5.56 NATO chamber (also accepts .223 Rem)
• 4150 CMV steel, stress-relieved
• 1:7 RH twist rate for optimal bullet stability
• Black Nitride finish (QPQ by H&M)
• Carbine-length gas system
• M4 feed ramp extension
• Weight: 19.7 oz
• 100% made in the USA

Compliance Note:
All NFA/ATF rules apply. Use only with registered SBRs, machine guns, or pistols. Do not install on a rifle-length lower unless paired with a permanently attached muzzle device, bringing total length to 16”.