Originally Posted by Styrak

Shitty thing is I don't have a stock hopup. Anyone wanna trade for a Prowin!?

Another question, what the hell is the switch dealie on the top of the hopup (to the very right of the nozzle)?
It's sprung, and if you press on it, it presses a nub up on the outside top of the hopup but I don't have a clue what it does.