Hey i just got a brand new kjw m9 full metal and its not fireing all that dependibly, 4 out of 5 shots go off no problem but every so often a bb is ejected backwards as the slide blows back, does it just need a little silicon oil or is this a more serious problem, thanks bye
Did you check the timing?
Maybe its not shimmed right?
Ray's got the MOVES!
Omg cmon u guys can you just let it go, I WAS WRONG, I AM SORRY, what else do you want me to do/say.
Silicon oil won't fix it. If you just got it brand new, I would suggest taking it back and exchanging for another one. The culprit is most likely a defective or warped feeding arm on the gas cylinder/nozzle. Could be other stuff, but that's first thing I would look at.
Thanks, i got it on ebay though, but i have a totally busted one i bought a while back for parts so ill see if i can enterchange that nozle, thanks neouser!!!