This Fish Hook Is Also a Gun

There's a tiny hole in the bottom of the shaft...  ...'s a tiny hole in the bottom of the shaft of this fish hook. When a fish yanks on the hook, it discharges a 4mm centerfire...  ...m centerfire cartridge and, hopefully, shoots the fish . These unusual guns were produced i...

http://www.neatorama.com/2012/07/14/this-fish-hook-is-also-a-gun/