Geissele Super Duty Mod1 Upper Receiver Group Complete 8in 300 Blackout Black. . These AR15 Upper Receivers through the skilled product specialists at Geissele are designed by using heavy duty and dependable components to be able to supply you with a product which is going to be effective for quite some time. Designed using some of the most useful accessible substances and construction these special AR15 Upper Receivers from the product professionals at Geissele can last an exceptionally lengthy time. Geissele has been generating high-quality products for a number of years and the Geissele Super Duty Mod1 8in Upper Receiver Group is their way of revealing exactly how much they are concerned. At OpticsPlanet we ensure that it is our obligation to obtain the most suitable product for your preferences and featuring the Geissele Super Duty Mod1 8in Upper Receiver Group is one thing that we're pleased to offer. Specifications for Geissele Super Duty Mod1 8in Upper Receiver Group: Manufacturer: Geissele Caliber: .300 AAC Blackout Overall Length: 17.125 in Barrel Length: 8 in Gas System Length: Pistol Length Barrel Twist Rate: 1-8 Threads per Inch: 5/8x24 Muzzle Device: HUXWRX Flash Hider-QD 762 Finish: Type 3 Hardcoat Anodize Fabric/Material: Aluminum & Steel Handguard Length: 7 in Bolt Carrier Group Included: MIL-SPEC Charging Handle Included: MIL-SPEC Magazine Included: No Package Contents: Geissele Super Duty Mod1 8in Upper Receiver Group Geissele 08-553B: Super Duty Mod1 Upper Receiver Group Complete 8in 300 Blackout Black