I initially purchased these mags for the PMAG look and for the decent amount of BB storage. However, when I received these mags I was disappointed to find out that these mags jam up like crazy. The design of these mags is that so the BBs are supposed to double-stack when loaded into the mag, but more often than not the BBs jam up next to each other and get stuck. The issue is that the the size of the BB track is too large to properly double-stack. I sometimes get lucky and they feed properly, but most of the time I just end up frustrated and ave to take the spring out again to un-jam the mag. Taking the spring out is beyond easy, but it still does not compensate for the absolutely terrible quality of the loading design.
Highly durable (I've beat the crap out of some of them; nothing more than a few scuffs)
Great fit, minimal to no wiggle
Easy to remove spring and unload
Jams up 90% of the time, leaving you to disassemble the mag
Way too frustrating to deal with during a game
Dysfunctional feeding system pretty much cancels out any pros (what's the point of a magazine that doesn't feed?)
Waste of my money and time