Intimidator: The Metal Puzzle Transformer With a Hidden Golden Gun

Gare Maxton, a machinist from Michigan makes many different interlocking solid puzzles of this type, but this one, he calls the Intimidator, is his masterpiece. Starting the disassembly process the special key is needed.Once diassembled, about 20 of the pieces that can be recombined to make a single action pistol-shot. 

Other parts of the puzzle separately and securely store "a customized set of tools, all necessary hardware, 45 standard bullets, a standard sight, a laser sight, and Bannister containing black powder pellets, a secure storage area for 209 primers shotgun, and spent primer removal tool and ramrod for loading the bullets.