Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol 4150 Light HBAR Barrel 1-8 Twist 11in M-LOK Free Float Hand Guard. Their most widely used Ghost Vital .300 blackout pistol kit includes M-LOK free-float handguard charging handle complete lower parts kit etc. Available in 7.5-inch barrel with 9-inch M-LOK Free Float Hand Guard or 10.5-inch barrel with 11-inch M-LOK Free Float Hand Guard. Specifications for Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Moly Steel Barrel 1-8 Twist M-LOK Free Float Hand Guard: Manufacturer: Ghost Firearms Caliber: .300 AAC Blackout Gas System Length: Pistol Length Barrel Twist Rate: 1-8 Condition: New Gun Rail: M-LOK Magazine Included: No Features of Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout: Ghost Firearms Milspec 7075-T6 Upper Receiver Complete Milspec AR15 Pistol Lower Parts Kit .750 Low Profile Gas Block Pistol Length Gas System Bolt Carrier Group Charging Handle Pistol Buffer Tube Assembly 7.5-inch barrel with 9-inch M-LOK Free Float Hand Guard OR 10.5-inch barrel with 11-inch M-LOK Free Float Hand Guard 4150 Light HBAR Barrel 1:8 Twist Flash Can OR A2 Flash Hider Various color options Package Contents: Ghost Firearms .300 Blackout Complete Upper Receiver w/Pistol Lower Parts Kit Ghost Firearms GF105GFR11FCAN300-KIT: Complete Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 11 inch M-LOK Free Float Hand Guard Flash Can Black