Great magazine, feeds and fits perfectly in my CA m15a4 without any modifiying or oiling.
It's by magpul so you know it's going to be good; magpul is actually a real steel gun company and recently turned airsoft too.
I'd without a doubt recommend a speed loader with this mag, it's almost inpossible to load by hand, it gets really hard to stuff the bbs in.
Plastic, but really really really really stong plastic, i'd feel better dropping it onto cement than my CA highcap. Very solid.
Feeds and fits perfectly, better than my stock mag.
Is very light.
Holds a lot for a midcap.
Doesn't rattle like a highcap does.
Rating: [5 of 5 Stars!]