If you are interested in reflected graphics gun games, then you want to check out the Exidy 4400 series of games -- Crossbow, Cheyenne, Catch-22, Combat, Crackshot, Chiller, Clay Pigeon, Hit N Miss, WhoDunit.
I had been wanting a MultiExidy cabinet for a long time and finally resigned myself to building a MAME version if I could find a cabinet. Last year I came across a Cheyenne at auction and scooped it up with the intention of doing so, although I wasn't sure if the AimTrak was going to work. Using a mirror was going to be problematic given the angle of the mirror. I thought about installing an LCD at the back of the cabinet instead, but was still worried about the short distance between gun and screen.
Fortunately, the Cheyenne was working and required some minor monitor repair.
More fortunately, around the same time, Dave Widel and Mike Doyle indicated that they would put together a new version of Dave's MultiExidy kit, so
I went that route instead. If you like reflected graphics gun games, then I highly recommend it.