Radical Firearms AR Pistol .300 Blackout 10.5" HBAR

Radical Firearms AR Pistol in .300 Blackout

The Radical Firearms AR pistol represents a thoughtful approach to compact, suppressor-ready firepower. Built on proven MIL-STD specifications, this .300 Blackout platform delivers the accuracy and reliability you expect from a quality AR platform in a more maneuverable package.

Barrel and Gas System

The 10.5" HBAR contour barrel is forged from 4140 Chrome Moly Vanadium steel and finished with Melonite for durability. A 1:8 twist rate stabilizes both supersonic and subsonic ammunition effectively. The barrel features:

• 5/8x24 threading for suppressor compatibility
• Pistol-length gas system optimized for the shorter platform
• Low-profile .750" gas block for cleaner sight lines
• A2 flash hider included
• M4 feed ramps for reliable feeding

Receiver and Handguard

Forged 7075 T6 aluminum upper and lower receivers provide strength and durability. Type III hard-coat anodizing protects against wear and corrosion. The 10" RPR free-float rail system uses M-LOK attachment points, giving you plenty of real estate for optics, lights, and other accessories while keeping your hands cool during extended shooting sessions.

Controls and Ergonomics

MIL-STD controls throughout ensure familiarity and reliability. The pistol tube buffer system is optimized for the shorter platform, and the design accepts standard AR magazines (30-round capacity).

The Bottom Line

Whether you're building a dedicated suppressed rifle or exploring the .300 Blackout cartridge, this Radical Firearms platform delivers accuracy, modularity, and dependable performance.