Question about KWA mags

Hi everyone, I recently got my hands on used a KWA LM4 for cheap, unfortunately it didn’t come with any mags and they seem to be hard to get where I live, so I’m wondering if anyone knows if they’re compatible with any other type of mags.

Information on KWA’s site is scarce and other sites like Evike don’t offer any information on mags either. I only have a couple of days to test/return it and shipping from most online stores will take at least a week.