Well, I got in some of these puppies a few days ago. From the outside they seemed normal, just like any other mag (minus the winding wheel), but I can't remember if they were plastic or metal, but it may have been plastic... too lazy to go downstairs and check =). Anyway, I went and got my loading rod and loaded it up. Of course, it took 2 full rods, which is amazing in itself. Two things I noticed at this point. The Bad: The spring is pretty stiff (may not load with autoloader). The Good: The spring is pretty stiff (harder to outpace the BB feeding).
At this point, I ran into my backyard with my M16 and grabbed the mag. One problem here... the fit was VERY tight. I think it was because I have the Systema Metal body on mine, but the thing was not gonna come out on its own. A slight pull and it was out like usual, but getting it in there I had to slap it a little harder than I would a Marui mag. I think the problem here mioght be the scaling. From what I've read, Marui scales their guns to just under real size. So, when I tried a real .223 mag in my airsoft m16 it wouldn't load at all... I think the G&P may be a little more true to reality, but in a plastic body it should fit fine. Anyway, the tight fit prevented rattle, so after crawling around (silently) in my back yard, I flicked the selector. Lo and behold, the thing worked beautifully in semi. A couple of times it popped 2 BB's into the 'chamber' (i think because of the spring strength), but I'm sure that will go away with use. After I got bored with semi, I flipped it into auto. Here is where it really shined =) It didn't skip once! I resumed my favorite practice of cutting weeds with the stream of BB's flying from my gun. Only when I was reaching for the mag to instinctively change the "small" standard, it kept shooting! I know that sounds pretty obvious, but the joy of one-handed quasi-hi-cap firing is nearly transcendant (okay maybe not, but not having to wind is great). The thing kept on spitting out BB's and by the time I went inside, twice as many weeds loathed the existence of the new G&P mag...
So, in conclusion, if you dont' mind a tight fit or filing the mag a little to make it fit a little better, buy these. If you want awesome capacity sans winding, buy them. If you just wasted a ton of money on CA standards, buy these (ahem, Kyle). If you want to get some, I'll be ordering within a week or two, so if there is large demand, I'll get em as soon as you want em. Still $25.
