The Stag 15 300 Blackout pistol is designed around the ideal length barrel for sub-sonic and super-sonic shooting suppressed or unsuppressed. This package features an 8 inch 1:7 twist QPQ Nitride barrel 30 caliber A2 birdcage flash hider and Stag Arms Slimline 7 M-LOK Handguard. - Weight: 5lbs 3.0oz - Length: 24 collapsed 26.5 extended - Action: Semi-Auto Direct Impingement - Caliber: 300 BLK - Twist Rate: 1/7 - Muzzle Device: 30 Caliber A2 Style Flash Hider - Barrel: 8CMVBlack Nitride Coated (QPQ) - Handguard: 7� Stag SL M-LOK free-float - Upper/Lower Receiver Material: Forged and Mil-Spec 7075 T6 Aluminum with Type 3 Hard Coat Anodizing - Bolt Carrier: Mil-Spec M16 BCG Black Nitride Coated - Gas System: Pistol Length with Low Profile Gas Block - Charging Handle: Standard Mil-Spec - Buttstock: SBA3 Pistol Stabilizing Brace - Buffer: Heavy Carbine Buffer and Spring - Trigger: Mil-Spec single stage - Grip: MOE SL Grip - Magazine: 30rd Pmag - Safety Selector: Right or Left Hand