Locksport enthusiast Bosnian Bill demonstrates how to open a new Master Lock with a small brass hammer. The process isn’t bumping exactly, but it looks as if the locking dogs are bounced or vibrated out of the way so the shackle can come out. The locksport enthusiast states Master Lock has threatened to sue him several times. Master Lock shared the following statement earlier this evening: “We recognize that there are those who attempt to challenge the integrity of security products for sport. With the proper time, knowledge and tools nearly any security device can be manipulated””]