http://www.patreon.com/ForgottenWeapons Cool Forgotten Weapons merch! http://shop.bbtv.com/collections/forgotten-weapons Today I am joined by Forgotten Weapons Field Research Assistant Clay to test out one of those super-extended 90-round AK mags that are so often seen at the junk tables of gun shows. How bad are they? Or do they actually work? Let's find out... Thanks to Marstar for letting me use their RPK to test out this mag! If you enjoy Forgotten Weapons, check out its sister channel, InRangeTV! http://www.youtube.com/InRangeTVShow