1911 Magazine in a Glock 21

So, yes, it is possible. Here's proof:

It seated and locked. And there was much gnashing of teeth during the removal process. Just because something can be done, doesn't mean it should be done.

Fortunately, the gun was unable to chamber a round.

__________________
In the depth of winter I finally learned that there was in me an invincible summer.
--Albert Camus

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