Just got done doing some mods on my cm9
One was to put dots on rear sight next I put fiber optic on front sight
Now for the last and some can't get them to work but I have run over 600 round through my 8 round mag with no failures at that point I wanted a full grip mag grip for it no one make one,so by being a woodworker I decided to make one. For me at this time of the year with heaver clothes I can conceal the longer mag