I bought this to compliment my CM050A which is quite picky on mags. I really like the style of the Bulgarian mags and even though they're not 7.62 like a 47 mag should be, they still look ridiculously sick on my gun. I've fielded these mags for a few weeks now and still haven't any huge issues.Out of the box since these mags were single stack I had no issues with feeding and I fielded the mags without a single hitch the day after they arrived from GI, no break in required. The quality of these mags are solid, I haven't broken any yet but whether they stand the test of time is to be seen, but for $13 a pop it doesn't seem like an issue.
I assume since CYMA is the OEM for the Beta Project Magpul AK, these mags are the OEM for them (seeing as the "official" beta project ones I can't seem to find in stock). I can't comment on how universal the mag fit is on these guys, but I would say that they'd fit for most AKs, definitely the steel CYMA (CM048+).
None so far. I guess the springs were a little stiff and took a bit of force the first few times to load to max capacity but that's basically a given for midcaps.
Rating: [5 of 5 Stars!]