Some updates

I've figured out most of the technical problems, especially the bolt and how it shoots. Found this guy on YouTube (Tacome1942) who also built his own gun, but out of paper. Reinforced paper, made by layering lots of paper together, held by white glue. Its strength is quite like wood, but only a tad weaker. It can be a time consuming process but it can really be used to make small bits like the trigger, sear, firing pin, etc.

Also from him I've found out how to make my gun shoot stuff. Look at this video to know more:



From this video, you can see he is shooting airsoft BBs but not from an airsoft gun. He simply put a BB inside the cartridge and let the primer do the rest. Looks like a primer alone can already shoot that good, just couldn't imagine the power if he had gunpowder too inside. From another of his video I've learned how to make my own primer. I'm looking for this:


Yes, you might have seen this before. Used to have it with my toy grenade, which I load the round in and slap it on the ground to give out a loud bang. It's so hard to find this nowadays and if you know where to get it, please do tell me.

I also need some copper/brass tubing to make the cartridge but those are hard to find too. I've also thinking of using the strengthen paper instead but I'm not sure if it can withstand the combustion.

To wrap it up, these are the materials I'll be using:
Cardboard (for the body)
PVC Pipe (for the barrel, but if I can't find the size I want I'll just use-)
Paper (more flexibility)
Springs
Spray paint
Airsoft BBs
Cap gun rounds (the primer)

I think that will be all. Now its all up to my wallet to decide when I can start building this.