These are neat but I'm skeptical of PSA's magwell adapter. Definitive Arms is the only one that made an AR magwell that actually worked properly, as far as I'm aware. PSA has also put out their AK101 and AK102 rock-n-lock 5.56 AKs. I'm really curious about the 102.
I had a Zastava M-85 pistol AK that had the AR mag well. It worked perfectly for me, although I never used any mags other than MagPuls! If is the same type magwell as the M-85 it should be GTG!