This is bad news for those Nerf guns that shoot large balls of plastic foam with lightly compressed air. (Or is compressed air excluded from "other propellant"?)
>The term “destructive device” shall not include any device which is neither designed nor redesigned for use as a weapon; any device, although originally designed for use as a weapon, which is redesigned for use as a signaling, pyrotechnic, line throwing, safety, or similar device; surplus ordnance sold, loaned, or given by the Secretary of the Army pursuant to the provisions of section 7684(2), 7685, or 7686 of title 10, United States Code; or any other device which the Secretary finds is not likely to be used as a weapon, or is an antique or is a rifle which the owner intends to use solely for sporting purposes.
Which is how >0.50" black powder rifles, air guns and flare guns still exist.
