This might look like a relatively straightforward 3D metal puzzle, but it holds a secret: if you put some of its pieces together in the right way, it'll turn into a functioning gun.

Yes, if you take about 20 of the pieces in this 125-piece puzzle and put them together properly, you'll have a fully-functional single-shot .45 caliber handgun. Uh, cool?

Luckily, the whole thing requires a special key to begin disassembling it, so the chances of some kid stumbling upon it at a toy store and ending up with a deadly weapon are slim to none.

Maxton via Neatorama