Well, I'm up to four carry guns with red dot sights now. 😎 This most recent home-built Polymer80 Glock 19 was just begging for a red dot. I was able to find a brand new Trijicon RM01 Type 1 for it fairly cheap, and had the same local guy that milled the windows in the slide do the milling for the RMR. These four guns are my most frequently carried handguns these days, so I thought it made sense to have red dots on them all. While I do have some other carry guns (compact metal framed CZs and 1911s), I don't carry them nearly as often so I'm not going to go through the effort of putting red dots on those. I'm not sure why, but I really do prefer polymer framed handguns for concealed carry.