Geissele Automatics Super Duty Mod 1 Upper Receiver Group 8″ 300BLK, Desert Dirt Color

Geissele Automatics Super Duty Mod 1 Upper Receiver Group 8″ 300BLK, Desert Dirt Color

The Super Duty Mod 1 improves upon the renown Super Duty and has updated several key components to continue providing unmatched accuracy, comfort and performance.

The Super Duty Mod 1 300BLK upholds this legacy, featuring the latest in firearms technology available exclusively from Geissele Automatics.

Front and center is the Geissele Cold Hammer Forged, Chrome Lined barrel, precision machined here in North Wales, PA from Chrome Moly Vanadium steel. Setting the Super Duty Mod1 300BLK apart is the patented Phased Array gas system, which utilizes multiple ports to precisely balance gassing and eliminate the need for an adjustable gas system. Combined with the Geissele braided buffer spring, this system provides a reliable and smooth shooting experience, whether shooting suppressed or unsuppressed with super or subsonic ammunition.

At the heart of this rifle is the Geissele Reliability Enhanced Bolt Carrier Group. Our Nanoweapon-coated carrier features a properly torqued and staked, Chrome Lined, Nanocoated gas key. The Cam Pin is machined from advanced, tool steel known as H13 which is also coated with Nanoweapon for maximum corrosion and wear resistance. The Reliability Enhanced Bolt Carrier Group features extended upper rails, providing greater stability and dramatically increasing feeding reliability.

The Reliability Enhanced Bolt Carrier Group comes with the Geissele Stressproof Bolt. Each bolt is rigorously inspected, high-pressure tested, mag particle inspected and Nanoweapon coated.

Rounding up the package is a 7” MK16 Super Modular Rail, that mates to the Super Duty Upper Receiver via a center aligning tab that removes any chance of rail rotation. The MK16 family of rails is renowned by operators for their performance and comfort. An Airborne Charging Handle ensures smooth and reliable operation.

Specifications

• Overall Length: 17.125″
• Caliber: 300Blackout
• Color: Desert Dirt Color
• Receiver: Super Duty w/ Cam Pin Cut-Out and Rail Notch
• Bolt Carrier Group: Reliability Enhanced Bolt Carrier Group
• Bolt: Geissele Stressproof Bolt
• Rail: 7″ MK16 Super Modular Rail with Center Tab
• Barrel: 8″ Cold Hammer-Forged Barrel, 1:7 Twist, Geissele Profile
• Gas System: Custom Pistol Length
• Gas Block: Antistrike Super Compact Gas Block
• Gas Port Size: Geissele Phased Array
• Charging Handle: Airborne Charging Handle
• Buffer Assembly: Geissele Milspec Braided Buffer Spring and H1 Buffer Combo
• Muzzle Device: HUXWRX Flash Hider-QD 762
• Thread Pitch: 5/8×24