hey all, i've been considering upgrading my hopup system.
i initially thought of buying a on piece like the madbull ultimate. but what is the difference between a hopup like that and one like this?
http://www.airsoftparts.ca/store2/in...oducts_id=1271
please don't just respond with " one is a one piece and the other is a two"
i'm looking for performance and bang for the buck difference.
thanks