The Radical Firearms RF-15 BTR (Radical Firearms part no. RF01864) is a 5.56 NATO AR pistol built on MIL-STD upper and lower receivers, paired with a 10-inch RPR free-float rail system for improved accuracy, cooler-running handling, and plenty of room for accessories. A 10.5-inch barrel keeps the package compact and maneuverable for close-quarters use. Finished in black with a black polymer grip, this Radical Firearms pistol delivers mil-spec compatibility at an approachable price point.

Key Specifications

• Chambered in 5.56 NATO/.223 Remington, one of the most versatile centerfire rifle cartridges available.
• Runs a 10.5-inch barrel for a balance of velocity and compact handling.
• Holds 30 rounds per magazine for a deep reserve of ready ammunition.
• Built on MIL-STD upper and lower receivers for broad parts compatibility.
• Wears a 10-inch RPR free-float M-LOK rail system for improved accuracy and cool-running handling.
• Equipped with a manual safety for straightforward, deliberate operation.
• Wears a black polymer grip for a secure, no-frills hold.
• Cycles in reliable semi-auto for controlled, repeatable follow-up shots.
• Finished in black for a tough, low-maintenance exterior.

Frequently Asked Questions

What makes this an accurate pistol? The 10-inch RPR free-float rail system isolates the barrel from handguard pressure for improved accuracy.

Is this pistol compatible with standard AR parts? Yes, it’s built on MIL-STD upper and lower receivers for broad parts compatibility.

What caliber does it fire? 5.56 NATO/.223 Remington.

Buy the Radical Firearms RF-15 BTR Pistol, 5.56 NATO, 10.5-Inch, M-LOK

Radical Firearms built this pistol to deliver genuine mil-spec compatibility and a free-float rail system without the premium price tag of a boutique build. Order it from our AR pistols lineup at our Lubbock, Texas gun shop for fast, insured shipping to your FFL.