what about those green gas cans is there any way to hook one up to a blow gun?

thats hpa right hpa stands for high preasre air right?

Ok so i want to build my first bbmg but im haveing trouble selecting the best propelnt for me I want to spend as little money as possiable but I dont know what to use. I did some reasrch but I still havent come to a conclusion heres what I know already. propane: its cheap easy to connect to a blow g...