[lumberjim]

ive used nail guns. they have a 2 part trigger.....a conventional trigger like a gun, and a plunger tip, that when compressed, releases the nail....as long as the trigger is pulled in.

some people modify them so that you do not need to hold the trigger, and the tip compression is enough to let it go. the nails come out REALLY fast. We used to shoot them at soda cans, but we'd strap the tip in, and use it like a gun.

In these pics, I think the different angles of entry make it look a little suspicious, but i assume the cops know what's what. i knew a guy that nailed his heel to the deck once. he had the trigger held in, and just brushed the end of the un against the edge of his boot as he stood up. the nail went clear through the boot, into his heel, out the bottom of the boot, and into the plywood decking. the foreman yanked it out with his claw hammer after telling him he'd count to three, and pulled at 2. blech.