I own a 93, and I had a retired ATF buddy who owned an original STG44. And I watched him clean it.
He had a problem finding good spare magazines, so he checked out the ones for my 93 wondering they
could be modified to work. Side by side they looked identical my 93 mags were 30 round.
But that's where the similarities stopped, and besides the 93 mags were becomeing hard to find also.
We finally found a man in Finland who had some of the original mags, but no rifle. But he sold six
of them to my friend for $50.00 apiece, a real bargain for those. He let me fire it once, I found it
to be a little bit hard to control the muzzle climb if you weren't expecting it. About like shooting
a Thompson M1 Tommy Gun for the first time.