In 1929 Elek B. Juhasz of Lebanon PA patented this sleeve gun. It is a single-shot, manually cocked firing mechanism with a screw-on barrel and is worn on the inside of the forearm, presumably under a sleeve. The firing sear is connected to a pull string, which is to be tied to a finger ring. The gun is then fired by lifting the hand up, a la Spiderman shooting webs.
The design was manufactured by Elmer Carlstrom of Chicago, but only a small number of(a few hundred at most) appear to have been made. Despite often being referenced as using a .30 or .32 caliber pistol cartridge, this example is made for a blank or tear gas round – which would be a lot less randomly dangerous than a live bullet in this sort of very impractical device.
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