so far, so good
I live in a place where one does his very best to prep before range time...which means, take lots of mags to the range and make sure they're full prior to stepping out into the cold of the winter or the bugs of the summer. I've only installed two of these, but have thoroughly used and abused them to the point where I'm Almost comfortable enough to keep them in my response gear...that's no indictment of them, it's just a recognition that I have very high expectations. I'll order more and torture them more, but I have no reason to not expect success.
Best extended mag pad I've had!
I've tested them by dropping them multiple times from about 7 feet on carpeted floor, fully loaded and they didn't come apart. I've slammed them in as hard as I could, multiple times and they didn't come apart. They have functioned flawlessly in 9 and 40 both. The only down side is it's really tough to get that last round in until they're broken in and they are pricey. The design is excellent and they're a great option when you carry one spare mag for concealment.
Great option
I use these on my limited G17. The +3 gives me the same mag capacity as my G22 limited gun with +5 extensions so I can keep stage planning and reloads consistent. Works well with Dawson Ice mag well. I even put one on a Korean G17 mag for kicks - so far so good.
Great product
Bought these for competition shooting, they work perfect with a magwell and have had zero malfunctions with them.
Working great
Been using these for on duty and range time. No malfunctions. I have even dropped the mag fully loaded on concrete by accident. The only thing that I don't like is that the latch has a little bit of play in it but like I said it has not failed.