I just bought a PSAK-47 GB2 from Palmetto last week. I just received it, cleaned it and checked to see how the mags fit. The Magpul G2 Pmag came with it fit perfectly. I tried my other Pmags and they fit with no problem. I then inserted one of my Croatian bolt hold opens with the maple leaf stamp that I bought from SG Ammo and they wouldn't stay seated in the magwell. I tried this with 6 other Croatian's and they wouldn't stay seated as well. I was able to seat all 7 mags in my CII AMD 65. It was a little difficult to insert them but they did stay seated. Research shows the PSAK did have an early problem with mags staying seated but that was supposed to be corrected. I couldn't find very much written on the Croatian maple leaf mags to come to any conclusion as to whether there are reported problems about them
I've attached some photos of the mag catch lever. Please let me know if you think it appears to be installed correctly. I'm guessing not since it catches the locks in the Pmags. Also, please let me know if you think the problem will be worked out the more I insert mags. Or, do you think it might be the Croatian mags.
I've sent this problem into PSA and haven't heard back yet.