Discussion Main / DoubleWeapon

Somehow I can't imagine that's what this trope was supposed to include. In order for a gun to be a double weapon in the sense of this trope, I imagine it would have to have barrels pointing in opposite directions, which I have never seen even in fiction yet. Any weapon where the offensive parts are pointed in one direction probably wouldn't count even if it had multiple projectile-shooting or melee weapon components.

Would this trope apply to ranged weapons as well, or just melee ones? For example, would a shotgun with two barrels be considered a double weapon? Would an anti-air cannon with four barrels be this taken Up To Four?