Saw this at one of the major AK forums. It has been a little bit of an open secert that MD Arms (makers of great Saiga stuff) have been working on quad stack mags. Here's portions of Mike's post on it: "I have ZERO doubt that our quads will by far be the best AK mags in the world... Full heat treated steel inserts through out (thats in the rear and front mag catch, feedlips, at the bottom for the floor plate and a removable metal floor plate) and the plastic we use is far superior to the plastic used in ANY surplus or aftermarket AK mags to date. In fact the material we use is so strong I am completely confidant that we could not use metal and still not have the breakages that others do that skipped the metal inserts. That isn't our style though. Ous (sic) will have the steel inserts even if it is overkill with our material. We don't cut quality corners to save pennys on the dollar... Going to be a lot of foot in mouth when we release the quads from those who doubt them. It might be best to wait for first hand experience to avoid being one of those guys... For the guys that claim they don't need 50rd we will have a nice tight 30rd for you that is a touch shorter than a 20rd double stack. It will be far less constricting to carry on your person than a double stack 30 and lighter and stronger as well..."
If they are as good as he says we are in for a treat!