Britain's Experimental Viper No.3 SMG/PDW
The Viper No.3 is a unique, one-of-a-kind British experimental submachine gun designed for one-handed use, potentially for post-WWII occupation forces. Despite mechanical similarities to the Sten, it uniquely utilizes MP40 magazines and features a removable stock and a push-through fire selector. The design incorporated salvaged parts, indicated by an unused gas port on the barrel, and never entered production.









