7.5" .300 Blackout Complete Barrel Assembly

7.5" .300 Blackout Complete Barrel Assembly

Build or upgrade your short-barrel rifle or AR pistol with the 7.5" .300 Blackout Complete Barrel Assembly. Purpose-built for maximum power and compact maneuverability, this all-in-one barrel system comes pre-assembled with every key gas and muzzle component required for a seamless drop-in build.

Constructed from high-grade 4150 Chrome Moly Vanadium steel and finished in durable Black Nitride for superior wear and corrosion resistance, this assembly guarantees smooth cycling and reliable performance with subsonic and supersonic ammunition alike.

Component Specifications:

7.5" AR-15 .300 Blackout Barrel

• Caliber: .300 Blackout (7.62\times 35\text{mm}
• Material & Finish: 4150 Chrome Moly Vanadium Steel with Black Nitride finish
• Profile & Twist: Light Heavy Barrel (HBar) profile with 1:8 twist rate for optimal stabilization across a wide range of bullet weights
• Feed Ramps: Precision-machined M4 feed ramps for consistent, jam-free feeding
• Gas & Threading: Pistol-length gas system, .750 gas block journal, and standard 5/8\times 24 thread pitch
• Markings: Spiral engraved near the muzzle break for clean identifier visibility

A2 Birdcage Flash Hider (7.62 / .300 BLK)

• Design: Classic A2 Birdcage style with crush washer included
• Construction: Machined from high-strength tool steel with a Black Oxide finish
• Threading: 5/8\times 24 thread pitch suitable for .300 BLK and .308 caliber platforms

Pistol Length Gas Tube

• Origin: Made in the USA
• Material & Finish: Mil-Spec 304 Stainless Steel with Black Nitride finish
• Hardware: Durable stainless steel roll pin included

AR-15 / AR-10 .750 Low-Profile Gas Block

• Design: Sleek, minimal-profile gas block engineered to fit underneath extended free-float handguards and tactical forearms
• Function: Replaces bulky factory front sight blocks while maintaining proper backpressure for smooth, reliable gas system cycling