I don't know , and even the server Owner don't know we are basically using your standard 30 round, coupled standardized mags on our community server and they just keep on disappearing. Every time we try to use them to the point where they are basically nearly obsolete, and I like to be able to use them with the M16 and the M4 to give it a more tactical look. But due to the server restarts and then disappearing , it's kind of hard to enjoy those magazines while that's going on , and I wish that could be fixed.