Hi Honda....."Mega Mag" Well, I can't say that I have ever heard of them?? I can tell you however that price is a large factor when it comes to finding good quality Mini 14 after market mags. I have a Ruger factory, and several John Masen mags. Both work great. From what I have read around here as well, Ruger factory are king. They are followed by PMI, John Masen, FourFour mags, etc. I expect to pay about $40 and up, for a good quality Mini mag!! Perhaps these "Mega Mags" are the answer to all of our prayers.. If so, let us know.