I don't know a lot about tanks.  It seems likely to me that a m16 type vehicle (4 50s) could disable the engine or pintle gun of a panzer.  Maybe, it could even damage the hull gun.
But wouldn't it be impossible for machine gun/cannon fire (from any airplane or ground vehicle) to damage the main gun of a panzer?
As I admitted at the start, I don't know ... it just seems very unlikely to me.
And yet we continue to have have Panzers killed (dead/gone) by m16s, m3s and stafing fighters.  Seems strange.
Please clue me in and tell me I'm wrong. 

curly