The Radical Firearms RF-15 .300 Blackout is a 16-inch HBAR AR-15 rifle built on forged 7075-T6 upper and lower receivers (brand part no. RF01708). Radical Firearms pairs a 4140 chrome-moly vanadium barrel with a 15-inch SHR free-float M-LOK rail and a pistol-length gas system sized for the .300 Blackout cartridge. B5 Systems Bravo furniture rounds out the build with an adjustable stock. It suits range training, modular builds and practical ranch or property rifle setups.

Key Specifications

• The chambering is .300 Blackout, a cartridge designed for AR-15 platforms and a strong match for suppressed shooting.
• The barrel is a 16-inch HBAR contour, which adds mass for rigidity during extended shooting.
• The barrel carries a melanite finish, a corrosion-resistant treatment that protects the steel.
• The twist rate is 1:8, which stabilizes a wide range of .300 Blackout bullet weights.
• The gas system is pistol length, a configuration suited to cycling the .300 Blackout cartridge.
• The gas block is a low-profile .750 design that fits beneath the free-float rail.
• The handguard is a 15-inch SHR free-float M-LOK rail, with room for lights, grips and other accessories.
• The receivers are forged 7075-T6 aluminum with a Type III anodized finish for strength and durability.
• The stock is a B5 Systems Bravo with 6-position adjustment to fit the shooter.
• The magazine is a 30-round 5.56 pattern magazine, matching the standard AR-15 capacity.

Frequently Asked Questions

Is the Radical Firearms RF-15 chambered in .300 Blackout? Yes. It is a 16-inch .300 Blackout AR-15 rifle with a 1:8 twist and a pistol-length gas system.

What handguard does this RF-15 use? It uses a 15-inch SHR free-float rail with a thin M-LOK hybrid interface for mounting accessories.

What stock does it come with? It comes with a B5 Systems Bravo stock that has six positions of length adjustment.

Buy the Radical Firearms RF-15 .300 Blackout 16-Inch AR Rifle, 15-Inch SHR M-LOK Handguard, 30-Round

The RF-15 gives you a complete 16-inch .300 Blackout AR with a free-float M-LOK rail and quality furniture. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and browse more AR rifles while you are here.