10.3″ 5.56 NATO 4150 CrMoV Carbine Government 1:7 Nitride Barrel
Compact precision with combat-grade durability.
The 10.3″ 5.56 NATO Carbine Barrel is engineered for short-barreled rifles, pistols, and suppressed builds where reliability and accuracy are critical. Constructed from rugged 4150 Chrome Moly Vanadium steel and finished in black nitride (Melonite/QPQ), this barrel offers exceptional wear and corrosion resistance for high-round-count environments.
With a Government/SOCOM profile, carbine-length gas system, and a 1:7 twist rate, it’s designed to stabilize heavier 5.56 projectiles (55–77 gr) while maintaining optimal gas pressure for smooth, dependable cycling. Whether you’re building a CQB setup or a duty-grade rifle, this barrel delivers modern battlefield performance in a compact footprint.
Features
- 4150 CrMoV Steel Construction – Superior strength and heat tolerance
- Nitride Finish – Corrosion-resistant, smooth, and easy to clean
- Government Profile – Balanced for rigidity and weight
- 1:7 Twist Rate – Ideal for stabilizing heavier rounds
- Carbine-Length Gas System – Reliable function in short-barreled platforms
- Threaded 1/2×28 – Suppressor and muzzle device ready
Specifications
- Caliber: 5.56 NATO
- Barrel Length: 10.3″
- Gas System: Carbine
- Twist Rate: 1:7 RH
- Muzzle Thread: 1/2×28
- Gas Block Journal: 0.750″
- Profile: Government / SOCOM
- Finish: Nitride / Melonite
- Platform: AR-15
- Weight: 19.3 oz
- Origin: Made in the USA






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