Brand: Radical FirearmsCaliber: .300 AAC BlackoutAction: Semi-AutomaticOperating System: Direct ImpingementBarrel Length: 8.5″Barrel Material: 4140 Chrome Moly VanadiumBarrel Finish: MeloniteBarrel Profile: HBARBarrel Thread Pitch: 5/8×24Barrel Twist Rate: 1:8 RHGas System: Pistol-LengthGas Block: .750″ Low-ProfileMuzzle Device: A2 Flash HiderUpper Receiver: Forged 7075-T6, M4 MIL-STD, Type III AnodizedLower Receiver: Forged 7075-T6, Type III AnodizedHandguard: 7″ Free-Float M-LOK RPRCharging Handle: MIL-STDSafety: MIL-STD Ambidextrous SelectorMagazine Capacity: 30 RoundsIncluded Magazines: 1 MagBrace/Stock: Magpul BTR Pistol BraceWeight: Approximately 6.6 lbsLength: Approximately 25″ (collapsed)