The ZX-76 is a pump-action shotgun feeding from an 8-round detachable magazine and incorporating an unusual double barrel design; while the weapon typically fires from only one of these barrels at a time, the weapon is also capable of discharging both simultaneously, for a much more powerful blast.
It is a very effective weapon in close quarters or for charging enemies. Each magazine holds eight shells. The ZX-76 also features a secondary fire that fires off two shells simultaneously, though the weapon user must use the pump-action to load more shells if this secondary fire is used.
The ZX-76 seems to be based on, or at least takes some features from, the Mossberg 500 shotgun — the pistol grip and forward grip are noticeably similar to the Mossberg. It is possible the ZX-76 is also based on Dom Vriess' custom-built Collapsible Shotgun from Alien Resurrection, as both are unorthodox double barrel pump-action shotguns.