MGI AK-47 Mag-Well

The concept of a lower specifically for 7.62x39 is excellent, but in my opinion a non interchangable system for the 7.62x39 at a reasonable price would be far better received, at $794 to get a lower to use AK47 mags is just a to steep, the only advantage to interchangability is if you wanted to register is as a short barreled rifle using 7.62x39 and .556, as any other caliber combinations like 9mm and .556 are obtainable in a much cheaper standard lower with a standard 9mm colt style adapter. the only other exception might be the M14 mag conversion but I still haven't figured out a use for larger case capacity round in a small/light duty bolt carrier assembly.