i was thinking of purchasing some 30 rounders from rguns, and i see that they have black teflon "mil-spec" and grey film coated "mil-spec"  anyone have any experience w/these mags? i'd ask rguns directly, but their customer service skills suck, and i'd get a one word answer if i got one at all.
BTW, both of the mags i'm talking about are on page 3 of the mags section of their website.

If they are true milspec then the color doesn't matter , myself I have a crap load of grey ones with Okay stamped floor plates . None have failed me yet . The teflon is good in the fact that they drop free easier from some ARs with tight mag wells .

o.k., that's great, now can anyone tell me about the ones rguns sells?

I ordered 4 of the DPMS floorplate mags w/teflon coating.  I wanted them because I have a DPMS rifle with black teflon'd receiver.  Yeah, vain and unimportant, but hey, I match...lol.  Seriously, they already have green followers, they do drop free from my rifle, and not all of my mags do, haven't shot them yet, but they are loaded up for the weekend, so I'll let you know.  They are nice looking mags and I imagine will shoot fine.  They are out of the DPMS but they still have the teflon GI's, so I ordered 3 more, and a couple of new colt 20's.  FWIW, when I asked about the DPMS he said "We're out of them, but the GI's are the same mag"  Hmm..anyway I'd try at least a couple.  From what I can see, they are the same as any GI mag, and slicker.  Just my 2 cents

thanks, let me know how they work for you.

Black or Gray Teflon are my favorites.

I prefer those gold colored mags with the grey spots on them.