■ Zips. Pipes, Can you dig it? It's a shotgun shovel, an unusual design by a local biker made from a shovel handle and galvanized pipe. The barrel is threaded pipe while the firing mechanism is a spring-loaded metal rod. (Courtesy of David H. FinkJ improvised and modified firearms books. Certainly, much of their gimmick ordnance is merely modification of existing weapons or designs. Sadly, though, when news of these weapons is leaked,