Needs work to function, but some flaws cannot be worked out.
I bought a handful of these for a Bulgarian Makarov.
First thing that I noticed, is that they created a lot of friction when being inserted into the magazine well. I noticed that some magazines would produce so much friction at this tab, that they would fail to cycle, as the follower would be jammed in the middle of the mag due to the tab grinding it to a halt. This is due to the follower having too long of a tab that pushes the slide stop up. The solution to excessive friction was to file down that tab to make it as long as the factory original.
Second thing that I noticed, is that the magazines will sometimes fail to chamber a round on the first round. This is because of the front of the magazine feed lip is higher than the originals. This created a ton of friction on the top round, and on the following rounds as well. I was able to easily remove rounds from the factory magazine, while these new ones would need a LOT of force to remove by hand. The solution to this, is to file the front of the magazine where the rounds pass over.
I noticed that these magazines only pushed the slide stop half way up. They would sometimes make the slide fail to lock open after the last round because of this. This has no solution that I am aware of, as you would need to add some material to make the tab push the slide stop all the way up.
Then I compared these mags with the factory ones, and noticed that the little notch for the magazine release was in a different spot as well. This could have contributed to the failure to lock the slide back.
These magazines are junk when used in the standard Makarov (Bulgarian in this case, which is identical to the Russian military model). I would not trust my life with them, and I would not trust them to be at the range.
The ONLY reason why I gave these a value of 2 stars, is because I was able to take the springs out of them, and put one in the original factory magazine. Perhaps the flood plates interchange as well. Hopefully, the springs are of better quality than the rest of these mags.