The Radical Firearms RF-15 RPR is an AR-pattern modern sporting rifle built around forged MIL-SPEC receivers and a free-float RPR M-LOK rail. It is chambered for .223 Rem / 5.56 NATO and ships with a 30-round magazine and an MFT minimalist stock and grip for a lightweight, ergonomic platform. The rifle uses a mid-length gas system, a MIL-STD charging handle, and an A2-style flash hider.