Q&A for How to Make a Rubber Band Gun

Yes, you can.

Yes. There are many more ways to make one. A quick way is to carve a gun shape out of wood, then put a stick through, top to bottom, for the trigger, and a nock on the front of the barrel, to hold the band in place.

You can replace the wood with cardboard. The "trigger" thumbtack is optional, you can tape/glue cardboard on instead.

Yes; metal might even be better.

Yes, you would have to make the gun longer though so the glider has some room to gain speed and not crash into the ground, but it would work.