I ordered a set of these and got Cyma ones. Ordered another couple and got Cyma ones again. Great mags, work well, feed well, full metal.
It's all perfect, I ran 4 mags of 5.56 55gr. And 62grn back to back and everything was still in place and working perfectly, I'm definitely returning to purchase more, thank you very much Sixmm
The bottom of the GM magazine has a button which will block the base pad after you install it. It you need to take the base pad out, it will need a lot of works to do.
They might have shipped me an old version or whatever, but the brightness on my unit is very poor, making it unusable on a sunny day. Otherwise it's a nicely made replica with all the trades and stuff.
Too bad sixmm doesn't want to help me with this issue, customer service seems non-existent, getting into contact is almost impossible.
Everything was very satisfactory and the part firs prefectly