Ballistic Advantage 300 Blackout 16" Pistol AR Barrel

Ballistic Advantage Modern Series 300 Blackout Barrel

This 16-inch 300 Blackout barrel represents a thoughtful engineering solution for AR-15 builders seeking a dedicated subsonic platform. Ballistic Advantage has constructed this barrel from 4150 Chrome Moly Vanadium steel, a material choice that balances durability with cost-effectiveness.

Key Features

• Caliber & Length: 300 Blackout, 16 inches
• Twist Rate: 1:7 inch (optimized for both subsonic and supersonic ammunition)
• Gas System: Pistol-length configuration for compact builds
• Threading: 5/8x24 (standard suppressor mounting)
• Finish: QPQ corrosion-resistant coating for longevity
• Gas Block Journal: 0.750 inch diameter
• Feed Ramp: M4-style with QPQ coating

Construction & Durability

The QPQ finish provides genuine corrosion resistance without the brittleness sometimes associated with other hardening processes. The M4 feed ramp extension ensures reliable feeding across a wide range of ammunition types—a critical consideration for a cartridge as versatile as 300 Blackout.

Practical Application

The pistol-length gas system keeps your overall build compact while maintaining reliability. The 1:7 twist rate stabilizes both lightweight and heavy projectiles, making this barrel equally at home with 110-grain supersonic loads or 220-grain subsonic ammunition. This versatility makes it an excellent choice for hunters, sport shooters, and those building dedicated suppressed systems.