another thing that works for the low budget: get a mask and a tipx and some 12-gram co2.
Only works if pistol is your style, but I took mine for a spin in the midst of egos, geo, etek and dms, and bow to no one.
Another thing that works is a used cocker with a pump kit, though the tank will cost extra.
Also, see this?
steer clear of the little hoppers an get a winchester or something similar - the on I have jams like there's no tomorrow.