The Geissele Super HBAR MOD1 14.5" Complete Upper in Black is a heavy‐barrel upper receiver assembly built for precision, durability, and hard use on AR-15 style platforms. Featuring a robust .812″ gas journal heavy barrel that is cold hammer forged and chrome lined, it’s optimized for extended accuracy and heat capacity while maintaining reliable cycling via a mid-length gas system and Super Compact gas block. The full-length MK16 M-LOK free-float rail provides a rigid modular platform for optics and accessories, and the upper is compatible with standard AR-15 lowers. Threaded 5/8×24 for muzzle devices, this complete upper is ideal for custom rifle builds where enhanced barrel stability and accuracy are priorities.