I have a Kimber Compact CDP with 3 factory 7 round mags. They have been flawless so far (approx. 1200 rounds) the only mod. I made was to switch the metal follower with Wilson Combat plastic follower and accompanying springs. I've heard of, and seen photos on this forum, about the metal followers marring the feed ramp. I did not want to damage my new gun...The only downfall is that the Wilson followers reduced the mag capacity to 6 rounds