Radical Firearms RF-15 FP10.5-5.56M4-10RPR-BTR | 10.5″ 30rd

The Radical Firearms RF-15 is an AR-style pistol built on MIL-STD upper and lower receivers with a 10.5″ free-float RPR rail. It ships with a Magpul BTR pistol brace and a 30-round magazine, offering compact handling and a full set of mounting options for sights and accessories. For this platform an optic such as the Vortex Sparc AR red dot (well under $1,000) provides a clear, low-profile sighting solution that works for rapid target acquisition on a compact AR pistol. Typical uses include range training and practical/competition shooting.

Product Specifications

• The manufacturer is Radical Firearms.
• The model is RF-15.
• The manufacturer part number is FP10.5-5.56M4-10RPR-BTR.
• The caliber is undetermined — source data contains conflicting entries (5.56/.223 and a 300 BLK reference); see notes.
• The barrel measures 10.50 inches for compact handling.
• The barrel twist rate is 1:7.
• The action is Semi-Auto.
• The magazine capacity is 30 + 1.
• The package includes 1 magazine.
• The firearm ships with a Magpul BTR pistol brace.
• The handguard is a 10″ RPR free-float M-LOK rail.
• The grip material is black polymer.
• The optic footprint is PICATINNY.
• The factory sights are none (optic-ready).
• The UPC is 814034029544.

This RF-15 configuration is built for shooters who want a compact, accessory-friendly AR platform with the handling characteristics of a short-barrel system. The free-float M-LOK rail leaves room for lights, lasers, and backup sights while the Magpul BTR brace provides a stable contact point for one- or two-handed shooting. If you want a compact AR pistol for disciplined range sessions or practical-style competition, this option delivers a practical balance of size, modularity, and capacity.

Many owners have said the Radical Firearms AR pistol “will not disappoint.”

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