from the Leonida armory

Unnamed GTA VI double-barreled shotgun

Shotguns

This unnamed double-barreled shotgun is due to appear in Grand Theft Auto VI, spotted in an official screenshot in which a poacher aims it at an alligator from the side of his airboat. The aerial angle of the shot is enough to identify its classic side-by-side double-barrel layout, but no manufacturer, capacity, or real-world inspiration has been disclosed. As with several other Grand Theft Auto VI weapons known only from screenshots, further details remain unconfirmed.

Shown officially Rockstar has shown this in a trailer, the Extended Look, an official screenshot, artwork, or its own site.