Radical Firearms RPR Features The Radical Firearms RPR is built around a direct impingement operating system paired with mil-spec aluminum upper and lower receivers giving the rifle a dependable foundation for consistent cycling. Its 16 inch barrel is cut from chrome moly vanadium steel a material known for handling sustained firing without excessive heat-related wear and finished in black Melonite for added corrosion resistance. A 1 in 7 twist rate stabilizes a wide range of 5.56x45mm NATO bullet weights giving shooters flexibility in ammunition selection from lighter varmint loads up through heavier match bullets. An A2 flash hider caps the threaded muzzle which is cut to a 1/2x28 pattern for easy accessory attachment. The 15 inch free float M-LOK handguard keeps the barrel from contacting the receiver during firing which helps preserve accuracy while also providing ample real estate for lights optics and other accessories. A Picatinny rail runs along the top of the receiver for mounting optics and the B5 Bravo 6 position stock lets shooters adjust length of pull to their preference or body armor setup. The B5 P Type 23 pistol grip rounds out the ergonomics with a more vertical grip angle favored by many AR shooters. Built as a Colorado compliant configuration with a 10 round magazine the Radical Firearms RPR gives compliant-state shooters a capable accessory-ready rifle for sale at GrabAGun. Radical Firearms RPR Specifications Manufacturer: Radical Firearms Model: RPR Type: Semi-Auto Rifle Caliber: 5.56x45mm NATO Capacity: 10+1 Barrel Length: 16 Barrel Description: Steel Threaded Barrel Material: Chrome Moly Vanadium Twist Rate: 1:7 Handguard: 15 M-LOK Free Float Stock: B5 Bravo 6 Position Grip: B5 P Type 23 Receiver: Aluminum Picatinny Rail Muzzle: A2 Flash Hider Thread Pattern: 1/2x28 Safety: Selector Switch Overall Length: 33 Weight: 6.7 lbs Available At: GrabAGun