Yep. I have a big pile of surplus-looking metal mags and I don’t worry about it at all. It’s completely unprovable so long as it’s not blatantly marked with recent commercial markings. Those countries made the exact same mag for decades, and the majority were produced before 1990 in a fit of Cold War paranoia/preparedness.If it's bakelite, metal and unmarked, or has one of the various Arsenal stamps on the back spline, it's a made for military use and pre-ban. I don't think anybody could prove otherwise. Because basically all these countries that manufacture them use different guns nowadays that take different magazines since the early 90s... and have produced millions of akm magazines for decades before 94, and even if they were made after it's not provable
And even then, the history of enforcement of the mag stuff leads me to believe that all the guys I see at the range with brand new Pmags will never have to worry about it either. People get really nervous about this stuff unnecessarily.