Correct mag for BYF 42 b block
I just purchased my first Luger. It is an all matching BYF 42 black widow with the original plastic grips. My question is the mag, it is not numbered and I want to know if it is correct to the gun. It is FXO marked with an eagle over 37, also the bottom is black plastic with no markings on it. Thanks to all who can help me!
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