Radical Arms Forged RPR Features The Radical Firearms complete AR-Pistol is a fully Mil-Spec AR-15 pistol built using law enforcement grade upper receivers and mil spec lowers. The 4140 chromoly vanadium steel barrel is Melonite treated for a harder-than chrome finish. This same finish is applied to the bolt carrier groups helping to reduce receiver wear and increase reliability. The bolt heads are MIL-STD and MPI for quality assurance. The full-length free-float handguard keeps your hands cool and provides plenty of room for accessories. This model has a 10.5 barrel Radical Firearms 10 RPR handguard with Magpul M-LOK slots on sides and bottom of the rail. Radical Arms Forged RPR Specifications Caliber: 5.56x45mm NATO Model: Forged RPR Stock Finish: Black Action: Semi-Auto Sights: None Optic Ready Capacity: 30+1 Muzzle: A2 Flash Hider Grips: Black Polymer OAL: 26.12 Receiver Finish: Black Hard Coat Anodized Receiver Material: Aluminum Stock Description: Buffer Tube Twist: 1:7 Barrel Finish: Black Nitride Barrel Length: 10.50