If you've seen a Welrod for the first time, you might not realize what it is. When disassembled, it resembles a piece of industrial equipment, the sort of thing you might find in an obscure corner of the hardware store next to caulk dispensers or hot glue guns. In fact, it was nicknamed the "bicycle pump" by those who used it. It also has no easily-identifiable markings or symbols on its plain metal body. This historically-significant weapon has a very specific purpose: silent use behind enemy lines. Although the secretive nature of this gun makes tracking its use difficult, reports...