Over all it works very well, it seems that the winding mech is a bit loud and whiny and the capacity that is actually kept at the ready is a bit small. However over all it works like what you would expect or want out of a Cmag.
One of the big problems I faced with this was when installing the triple A batteries, the wire connector that attaches the battery box to the motor popped off, and I had to solder it back on. I would warn those without the capacity to use a solder gun, because You may be quite likely to need it.
It fits really tight, however, and there is no satisfying 'click' when you insert it into the mag well, it slides in and just kinda sticks. Be careful that you have actually gotten it in.
-Works like a charm! Feeds well.
-Its a very cheap C-mag
-Over all, now, I have no complaints.
-Fits a little too tight in the mag well.
-winding is a bit loud.