Appeared In: You Only Live Twice, 1967
Used By: James Bond

James Bond's guns of choice may have been the Walther PPK, and then P99, but hands down one of the coolest pistols 007 ever fired was the Gyrojet rocket gun. Despite it's diminutive size, the rocket guns, as its name implies, packed a wallop of a punch thanks to its rocket-propelled ammunition. Developed and tested for the U.S. and British military, the prototypes now go for a hefty sum at auction.