This was my first time shooting my new CZ-USA P-09 Urban Gray with a red dot sight on a milled slide at a USPSA match in the Carry Optics division. I've shot my P-07 with a red dot sight in this division many times, but the recent rule changes now allow 141mm length mags with no capacity restrictions, so I put together a P-09 specifically for Carry Optics with a second slide that I acquired and sent off to CZ Custom to have milled with their multi-optic cut. Unfortunately, I had problems with the Burris Fastfire 3 optic losing its zero while shooting each stage. I later discovered that the locating dowels that I used to install the optic were slightly too short and were sliding up inside the holes in optic and allowing it to move around under recoil. Needless to say, my accuracy with the gun at this match was horrible. I've got the problem fixed now, but trying to figure it out during the match proved to be very frustrating. Instead of walking the stages to figure out a good plan, I was in the safe area trying to figure out what was wrong with the sight. Despite the accuracy issues and one major jam on the first stage that cost me at least 9 seconds, I was really happy with the way the P-09 felt while shooting. It felt like I was able to go a little faster with my splits and transitions than I was able to with the smaller optic equipped P-07 in previous matches. I'm looking forward to shooting this P-09 at future USPSA matches.