The lock pick gun was developed decades ago to allow police officers who were not skilled in the art of lock picking to open locks with minimal instruction Rogan industrial The DINO's Strong Pick Gun (down ward motion )has a very strong spring will easily pick pin tumbler and disc tumbler locks. It comes complete with 3 pick blades and 1 tension wrench. This strong pick gun is different from most guns on the market, dino's gun is assembled with screws instead of rivets, it can be opened with a screwdriver. Especially, the coating of gun consists of lacquer can resist stain and rust. These are one of the best manual pick guns you will find anywere