14.5" 5.56mm 1:7 Twist M4 4150 Barrel

Upgrade your build with the AR-15 M4 14.5" 5.56 Barrel, engineered for peak reliability, smooth cycling, and exceptional durability. Machined from heavy-duty 4150 Chrome Moly Vanadium (CMV) steel, this barrel features a corrosion-resistant black nitride coating inside and out for enhanced longevity and ease of cleaning under hard use.

Designed with a classic Government profile and precision M4 feed ramps, this barrel incorporates a mid-length gas system paired with a standard .750 gas block journal to deliver softer recoil and reduced wear on internal components compared to traditional carbine-length systems. Featuring a 1:7 twist rate, it stabilizes a wide range of bullet weights, particularly heavy 5.56x45mm NATO projectiles. Custom spiral engraving near the barrel nut adds a distinct finish, while standard 1/2"x28 threads allow easy installation of your favorite muzzle devices.

• Caliber: Chambered in 5.56x45mm NATO
• Length: 14.5 Inches
• Material: 4150 Chrome Moly Vanadium Steel
• Finish: Black Nitride Coating
• Profile: Government Profile
• Gas System: Mid-Length Gas System (.750" Gas Block Journal)
• Twist Rate: 1:7 Twist Rate
• Thread Pitch: 1/2"-28 TPI
• Feed Ramps: M4 Feed Ramps
• Markings: Spiral Engraved Near Barrel Nut
• Origin: Made in the U.S.A.