The main screw would come loose and pop in your face while you playing.
I have used this marker for about 2 years now, and I've never had a problem with it at all. But the screw cam loose once and popped me in the mask while I was shooting. But thats nothing. I love the trigger! It is really EZ to adjust and use. But you have to get a rhythm down to shoot fast. Because if you just try to pull the trigger too fast the trigger will just stay down. I had to get used to it. But I love this marker! It is really good. But I guess Mokal doesn't really make these anymore. I am not sure but I think they don't.
I recommend this marker over an Imagine any day. This is a really great marker.