had a fella that said hes used the poly mags extensively , said that the NON MOE mags are prone to breakage , it has to do with how an AK mag locks up that the lock nubs on the mag cant take the abuse and break ,just bumping the mag while locked in can damage the lock nubs , he said the MOE mags , which oddly enough are less expensive are good to go and they will wear out but that takes allot of use