This is the last cap on the second stage of Egypt.  I don't know what to think about it.  On one hand to me its glitching, on the other, the map lets you do it and it would be very hard to enforce.  I know other maps let you do this as well.  Heavy is the only class that can shoot thru walls, or floors (when shooting uphill).

I guess what really got me about this one, was that he was standing next to a dispenser, just shooting thru the wall the whole time.  Doesn't seem fair or legal, but again, what could be done about this if anything needs to be done.  (And I'm not sure anything would need to be done other than just dealing with it.)