It is a possibility – I’ve just never seen it happen in 20 years of Army time and 20 years of retirement.
I've seen it
A couple times-once due to my own stupidity. Didn't make sure the base plate was properly engaged on re-assembly.
Loaded it with rounds, and base plate promptly popped off. I can see the possibility of it holding until dropped
I always make sure they're properly seated now. My stupidity happened in my workshop, wouldn't want it too happen publicly