Gun

Using gun doesn't mean terrorism it's may be for self defence gun is a tubular ranged weapon typically designed to pneumatically discharge projectile] that are solid (most guns) but can also be liquid (as in water guns/cannons and projected water disruptors) or even charged particles (as in a plasma gun) and may be free-flying (as with bullets and artillery shells) or tethered (as with Taser guns, spearguns and harpoon guns).