ok one last time.....
i finally used it on the MAC. i shot about 150 rounds. the lube stayed where it was supposed to. i had some mag problems, but those mags suck anyways, so i doubt this had anything to do with it. again, the lube wasn't sprayed all over the ejection port and wasn't super dirty like it has been when i have used oil. still i like it, even though it is kind of expensive.