Yes, they will fit after a little modification.
You have tu cut the Spring before you can use it...
The difference between a Marushin Mag and a real UZI Mag are just
the long of the Spring and a fold in the back at the Marushins.
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I cutted the spring up to the length of the Magazin:
(right one is the real Magazin)
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it fits and feed great....
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