When i bought this gun (used) i took it home and gassed it up using green gas,Loaded .25 Madbull bio bbs (not sure of the exact dimensions) and shot it at first the selecter switch popped off but i got that fixed but now i have an issue thats very persistant and its annoying me.I can shoot semi auto perfectly fine but when i shoot full auto it shoots three shots and jams then it wont shoot on full auto after that,It will just jam constantly not sure if its my barrel (Falcon 6.02 tightbore) or the bbs or what.Im gona have jeramiah look at it today... Anyone else have this issue?