Ment
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The database suggests that the word "gas-powered" likely refers to a revolver as well. I'm not sure if that's accurate (in my opinion, the phrasing with a comma suggests the opposite). Even if it is, I don't see a problem; a gas pistol + stun gun + taser is more than enough for self-defense, but if you go that route, you might as well carry a machine gun under your arm, but what's the point?