Seriously though, I shoot steel through my AK (mainly because I can't find much locally available brass 7.62 X 39 that isn't super expensive). I would also readily shoot steel through my Glocks if needed, but I have been able to find fairly inexpensive brass 9 MM and .45 cal, so I haven't seen a need for this.
For full disclosure, I clean all my guns after every range session. Usually a quick wipedown with a take-along cloth in the range parking lot, and then a full breakdown and cleaning within 48 hours at the most (but I try to do it the same day).