to bulk fill you need a
caplet eliminater (it screws in place so you dont need small caplets and has a hole running through it so you can screw into it)
quick release end to screw into caplet eliminater
remote line
co2 bottle
its really easy, not sure where you can get the caplet eliminater from but gmac customs do 1 for the 2250 the rest of the parts from pheonix paintball