10.3" 5.56 NATO 4150 CrMoV Carbine Government 1:7 Nitride Barrel

10.3″ 5.56 NATO 4150 CrMoV Carbine Government 1:7 Nitride Barrel

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