I received a few of these PSA waffle magazines and have a few items to report.
The good:
The construction feels good and durable and they lock up tight in the magwell of my PSA AK-103. They also look cool so there is that.
Now the bad:
The follower dimensions are off, first the protrusion on top the the follower is only half the length that is should be, it only goes a little more than half of the length that the follower. This portion of the follower is important because it keeps the last round pinned against the feed lips. I also believe that the protrusion on the follower it is too narrow. Both of which cause the first round you load or the last round in the magazine to wobble around front to back in the magazine. I don't know if this will cause malfunctions on the last round, but it is not held securely. I believe the follower dimensions on this magazine is not correct. There is not enough engagement on the last round with the feed lips on the waffle magazine. These followers need to be redesigned, specifically the protrusion on top of the follower to go the entire length of the follower. Secondly the width of that protrusion needs to be increased and/or the angle needs to be increased which the side of the follower contacts the round.
There is enough play that shaking the PSA waffle magazine with a single round inserted, the round will pop out. I cannot get the comblock magazine to do the same thing.
Magpul AK magazines have the half protrusion on the follower but have a more angular transition to the top base of the follower.
This is not a super scientific test, but it proves that the follower engagement on the first or final round's side of the cartridge or the internal surface of the feed lips is not what it should be.
PSA waffle magazine follower length.
Comblock flatback magazine follower length.
Comblock single round magazine with positive engagement, just using gravity here.
The PSA waffle magazine single round engagement with just using gravity again, as you can see not enough positive engagement with the inner surface of feed lips.
Here is a different "new" PSA waffle magazine with even less engagement with the inner surface of the feed lips. Only using gravity here too.
I plan of going to zero using these mags, I will report back if any issues arise.