Radical Firearms FP85300HBAR7RPRBTR BTR 300 8.5" Pistol

The Radical Firearms FP85300HBAR7RPRBTR BTR 300 Blackout 8.5" pistol is purpose-built for operators and shooters who demand a compact, high-velocity platform without the NFA tax stamp requirements of a short-barreled rifle. This 8.5-inch pistol bridges the gap between concealed carry capacity and rifle-caliber stopping power, making it ideal for home defense, truck storage, or specialized tactical applications where maneuverability matters. Chambered in .300 Blackout, this upper delivers effective ballistics in confined spaces—a caliber choice favored by military and law enforcement for its subsonic-rated performance and barrier penetration.

Built on a proven AR-pattern platform, the FP85300HBAR7RPRBTR features a free-floating heavy barrel assembly optimized for accuracy and heat management during sustained fire. At 6.85 pounds, the pistol maintains a balanced point-of-aim for one-handed operation while the 8.5-inch barrel length provides sufficient dwell time for reliable cycling across both supersonic and subsonic loads. The M-LOK compatibility and standard AR accessory interface allow rapid integration of lights, optics, and rail systems, ensuring this platform evolves with your tactical needs. Radical Firearms' quality control and attention to chamber tolerances make this unit a dependable choice for handloaders and factory ammunition users alike.

This pistol benefits operators who understand .300 Blackout's niche—those running suppressors, testing ammunition, or building a legal compact rifle-caliber system. Home defenders gain a soft-recoiling platform with superior penetration versus 9mm or 5.56, while hunters appreciate the caliber's proven effectiveness on medium game at close range. Installation is straightforward for those familiar with AR assembly; the receiver pair pairs with standard lower receivers, and the pistol configuration requires no paperwork when maintained with a stabilizing brace and no vertical foregrip. Verify local and federal regulations regarding pistol braces before purchase, as legal status varies by jurisdiction.