Radical Firearms RPR Features The Radical Firearms RPR is built around a 7.5 inch barrel finished in black Melonite and chambered in 7.62x39mm with a 1:10 twist rate matched to the cartridge s bullet weights for reliable stabilization at pistol-length barrel speeds. The threaded muzzle accepts the included A2 flash hider or an aftermarket muzzle device and the gas-operated action cycles chrome moly vanadium steel components built to handle the pressures of the 7.62x39mm round. A Picatinny rail runs the length of the black anodized aluminum receiver giving the shooter a continuous mounting surface for an optic or other accessories. The RPR s MIL-STD upper and lower receivers keep the platform compatible with the broader AR parts ecosystem. A 10 inch M-LOK free float handguard wraps the barrel keeping the shooter s support hand away from a hot barrel while leaving the barrel completely free-floated for improved accuracy. This pistol ships with a brace attached giving it a stable point of contact against the forearm for one-handed or two-handed shooting without the legal complications of a shoulder stock. The selector switch safety and black polymer grip round out ergonomics that will feel familiar to anyone who has handled a standard AR-pattern rifle. For shooters who want a compact maneuverable 7.62x39mm pistol with modern rail real estate the Radical Firearms RPR is available for sale at GrabAGun. Radical Firearms RPR Specifications Manufacturer: Radical Firearms Model: RPR Caliber: 7.62x39mm Capacity: 20+1 Barrel Length: 7.5 Barrel Finish: Black Melonite Barrel Description: Threaded Twist Rate: 1:10 Receiver Finish: Black Anodized Receiver Description: Picatinny Rail Receiver Material: Aluminum Handguard: M-LOK Grips: Black Polymer Muzzle Device: A2 Flash Hider Safety: Selector Switch Overall Length: 26.25 Weight: 6.5 lbs Available At: GrabAGun