What went wrong here?

Clearly didn't click the upper into the lower receiver and yet somehow had it fire. This person doesn't know about P90 usage...apparently.

How to turn a P90 into 90 pieces.🤣

Upper not properly attached. This has never happened to me but I'm going to be triple-checking it from now on..

That looks expensive.

That’s an expensive malfunction, maybe a double feed?

A n1993R and a gun never mix well.. what’s he doing with a p90? lol

I’m sure he didn’t connect the gun back to its right positioning

That is one of the stances of all time.

He's black.

The upper and lower were not clicked all the way in or the mechanism had a flaw