you could get a c02 bike tire inflator. that worked well with me. you could prbably buy an attachable brassfitting regulator they only cost like $15

you could totally put peanut butter in that dish to fling unwanted rodents

jacksmirkingrevenges idea works very well. a friend and i did the same thing some time ago and it worked well except for it shoots full auto and you have to reload constanly. it also works well if you bend a small section of tubing up and around ( so then on top of the bike valve) into a bb chamber ...

how did you get the air from your bottle to the gun airtightly?

wow good job mate, you may want to consider unfolding a large box to get a small little "fort" and maybe add some duct tape to it to make the "fort" pretty safe. then u would DOMINATE! !

how do you transfer the air out of your coke bottle in an air tight fashion?

can you explain how you got the air out of the coke bottle in an air tight fashion

what did you use to attach the bottle to the gun airtightly?

wow. completely amazing. with that barrel what kind of range do you get? im having trouble myself finding a piece for the back of the barrel to get sealed bt the piston.

it would be pimp if you got a bolt action loading system on that beast

nice job mate. clean, well built and pretty BA