Geissele Super Duty MOD1 5.56 NATO 12.5" Complete Upper Receiver

Geissele Super Duty MOD1 Features This upper assembly features a 12.5 inch barrel that is cold hammer-forged in-house by Geissele ensuring tight tolerances and extended barrel life. With a 1 in 7 inch twist rate it is optimized for stabilizing heavier 5.56 NATO projectiles. At the muzzle the HUXWRX Flash Hider-QD provides both excellent flash suppression and compatibility with HUXWRX suppressors. The included Geissele Airborne Charging Handle offers smooth ambidextrous operation and enhanced grip. The M-LOK free-float handguard provides ample rail space for accessories while maintaining rigidity and minimizing added weight. Inside the upper is Geissele's Nanoweapon-coated Reliability Enhanced Bolt Carrier Group engineered for exceptional corrosion resistance and operational reliability in high-round-count or adverse conditions. Fully assembled and ready to pin onto your favorite lower receiver the Super Duty MOD1 is a top-tier choice for building a hard-use carbine or SBR. Geissele Super Duty MOD1 Specifications Manufacturer: Geissele Automatics Model: Super Duty MOD1 Type: Complete Upper Receiver Assembly Caliber: 5.56 NATO Barrel Length: 12.5 inches Barrel Type: Cold Hammer Forged Twist Rate: 1 in 7 inches Muzzle Device: HUXWRX Flash Hider QD Gas System: Carbine Length Handguard: M-LOK Free Float Charging Handle: Geissele Airborne Charging Handle Bolt Carrier Group: Reliability Enhanced BCG with Nanoweapon Coating Upper Receiver: Mil-Spec M4 Type Finish: Black Anodized Compatibility: Fits Standard AR-15 Lower Receivers