Holy shit, they do.

John and Alex then really did go over the Ray gun with everything but a fine tooth comb.

What really surprised the both of them was that Alex found a button on the back of the gun.

After a few moments of trepidation, Alex pressed the button.

The back of the gun then sprung open, revealing two square holes in the back of the gun.

Both nerds were quite curious and after pulling out a flashlight, they looked in and found that it looked like they were two chambers to load cartridges of some sort into the gun.

Were there expansion packs to the gun? What kind of cartridges could there be for something like this. Why two? Would different cartridges effect each other?

Alex and John looked at each other as they both came up with increasingly crazy questions.

The only thing either could think of though, was that they needed to find that store John bought the gun at.