>>Please note that the kilogram is technically a unit of MASS, not of weight. (A weight is a force, and therefore measured in newton.) Pound may be used both for mass and for weight.
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>If I'm not mistaken, the unit of mass in American units is the "slug," which weighs about 32.2 pounds. That would be a pretty big gastropod.

And I've read that they have handguns which fire slugs. No matter how great it would look on the screen, Hollywood never uses them in fight scenes - mortars, machine guns, rockets are ok, but slug guns you never see. I guess they're scared shitless of PETA's lawyers.