So after picking up a factory 33rd mag I found this deal on Botach Victory Glock .40 S&W 31rd Magazines and picked up 3 ($18 shipping made it less of a great deal) and I have played with them a bit, they aren't as good of quality as factory glock, and there was a ton of plastic flash sticking out inside the metal lining of the mags, the feed lips looked like poop. However two of them functioned perfectly without even cleaning up these issues. The 3rd has jammed all three times I have tried it. I am done with it. After the first time I looked closer and pulled it apart and found all the flash. So I cleaned up all 3, and this one is still a problem. So at this point I think its going away, anyone have any good ideas to make it reliable? I'd gladly trade it for a factory 17rd mag if someone else wanted it, but I can't see selling it otherwise. I have cleaned it up as much as I think its going to get, I've even given it some silicone lube.