The Super Duty MOD1 HBAR takes the Geissele Super Duty platform even further with a cold hammer forged, chrome-lined heavy barrel built to handle sustained fire while maintaining exceptional accuracy and reliability. At its core is the Nanoweapon-coated Reliability Enhanced Bolt Carrier Group and Forged Stressproof Bolt, both HPT/MPI-tested for maximum durability. The optimized gas system-featuring a bomb-proof Super Gas Block and tuned port sizing-delivers smooth, consistent cycling, especially when paired with the Super 42 buffer spring (sold separately). The upper includes the Nanocoated HUXWRX Flash Hider-QD for seamless FLOW suppressor compatibility, a robust MK16 rail with QD sling points, and the Airborne Charging Handle for snag-free, ambidextrous use. Built with no compromises, the MOD1 HBAR offers rock-solid performance, precision, and reliability in a complete upper package.