Thanks for your response.
I was wondering, since I just bought the gun a few days ago, is it common for the cutoff lever to be worn out so quickly? Or did I just buy the wrong gun at the wrong time?
Another thing, would you say it's easy and quick to replace the cutoff lever? I am asking because I don't want the shop to tell me it's going to take a week when it can actually be done within a few minutes/hours.
EDIT
Would this be an explanation for the problem I described earlier in this topic?
http://www.airsoftcanada.com/showthread.php?t=25310
I can remember this has happened around 2 times during the 6 hours I played.