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Are hi-cap Makarov mags interchangeable between 380 and 9x18?

4.8K views 3 replies 4 participants last post by  scooby  
#1 ·
Are the hi-cap Makarov magazines (original Russian, 10rd and 12rd) interchangeable between 380 and 9x18mm
like the single-stack magazines? In other words, would a 12rd 380 magazine work in a double-stack 9x18 Makarov gun [and vice versa]?
I suspect yes; but I am just double-checking.