[MerryDeer]

Hi,

All weapons when having 0 ammo, player cant have it?

[Mencent]

Hello.

Yes you must have minimum 1 ammo to get the weapon (firearms)

[MerryDeer]

Same with non firable weapons like katana, knife?

[Mencent]

Oh, I have just tested it.
Weapons which can shoot need minimum 1 ammo all other can have 0 ammo.