I'll being doing a review on this gun on this thread, but first I'd like to perfect it. First, the mag release is a little wobbly, should I be worried, and is there a way to tighten it? And secondly, a tbb 6.03, not sure if they make these for kwa m9s, do if someone could provide a link that would be great. After these small things I'll do a review. Thanks for the help.