7.5" 5.56 NATO Stainless Steel Complete Barrel Assembly

7.5" 5.56 NATO Stainless Steel Complete Barrel Assembly

Build or upgrade your AR-15 pistol or SBR with the 7.5" 5.56 NATO Complete Barrel Assembly. Designed for maximum maneuverability and uncompromising cycling reliability, this pre-assembled setup combines heavy-duty components engineered for tight groups, smooth performance, and long-term durability.

At the heart of the assembly is a 7.5" 4150 steel barrel with a slick Black Nitride finish and a versatile 1:7 twist rate to stabilize a wide range of bullet weights. The package comes completely integrated with a low-profile .750 gas block, a US-made 304 stainless steel pistol gas tube, and a classic tool steel A2 flash hider mounted on standard 1/2x28 threads.

Key Features

• 7.5" 5.56 NATO Barrel: Machined with a light HBAR profile, M4 feed ramps, pistol-length gas system, and spiral engraved markings near the muzzle.
• 4150 Black Nitride Finish: Delivers superior corrosion resistance, barrel longevity, and reduced friction compared to standard chrome lining.
• A2 Birdcage Flash Hider: Machined from tool steel with a black oxide finish; measures 1 3/4" and includes a crush washer on 1/2x28 TPI threads.
• Made in USA Pistol Gas Tube: Constructed from Mil-Spec 304 stainless steel with a black nitride finish and stainless steel roll pin.
• .750 Low Profile Gas Block: Slim-profile design fits seamlessly beneath extended free-float handguards while ensuring a tight gas seal for reliable cycling.