I would think they are. They look like the standard USGI mags with the green followers and teflon. If you're just looking for inexpensive mags, you can find them cheaper.
I just bought 20 more USGI (non teflon) from CMMG for 10 bucks each.
I wish they would give a little more info on them. I need to get a chamber brush and a few other thing so I guess I might as well get one to see how it works.
I bought 3 Center Industries and 1 Okay used USGI mags for 7 dollars each at the gunshow today. Would of bought more but the Mosin Nagant bug got me again.