I just got a brass eagle t-storm paintball gun. When I shot it, it wouldn't re-cock. You have to keep cocking it back.

Any ideas?

Well, of course the first question would be: Is it semi-auto or mechanical?

It is semi-auro

I know this question is old but figured I would answer just in case someone is searching for it.

Could be 4 things:
1. Too much air,(Made to run with CO2 not compressed air unless you put a regulator on it)
2. Not enough Co2 (The same pressure that shoots the paintball also recocks the gun)
3. The springs are wore out (probably from just sitting around cocked)
4. Blown out O-ring