For sale is a US Small Arms Co. Knife Pistol in .22. Serial number- NONE. U.S. Small Arms Co. Huntsman Knife Pistol. Very rare little folding knife pistol. Only marking is the patented stamp on the top of the chamber/barrel. The pistol functions and leaves a mark on a snapcap. The bore is in good condition. This is a truly unique one-of-a-kind item! In fact, one of these pistols was discovered on a German spy/saboteur in the Summer of 1942 as a part of Operation Pastorius. V2-E3 Barrel Length: 1 Bore condition: Good