These are pretty good mags. They are a good type of plastic, and they are jet black. They aren't some crappy gray.
I use them in a KWA M16 and all of them fit and feed just fine. I like to know which mags work in my guns, so I'm telling you they work fine in KWA lower receivers.
So far they feed fully and don't skip shots. Also, no BBs are left in the mag when I start shooting air.
So... 120 rounds per mag and 10 mags...
120 x 10 = 1,200 rounds!
If you are more careful with your ammo and not wasteful, that is more than enough for a day's game (or even two days)
Finally a good fit for my KWA
I had some crappy plastic shavings brake off from the latch that holds in the BBs.
Rating: [5 of 5 Stars!]