Geissele Automatics Super HBAR Complete Upper (.812 Journal) 16" 5.56mm
The Geissele Super HBAR Upper is a complete 5.56mm upper receiver group built around a 16" Geissele Super Heavy Barrel (cold hammer forged, chrome-lined) with a .812" gas block journal, reinforced .812 gas block, and Super HBAR straight gas tube. The upper is finished with a 15" MK16 rail with Geissele center tab and stainless QD inserts.
This upper is configured with a Nanoweapon Reliability Enhanced bolt carrier group, Geissele Stressproof Bolt with Asymmetric Cam Pin, an Airborne Charging Handle (ACH), and a flash hider. Includes bolt carrier group, charging handle, and Geissele box.