Yes, the Glock 42 has already changed and so have the Glock Factory magazines
Without having to steal anyone imagery, I’ll just defer you to Google to see what some of the other bloggers have mentioned and that there have already been changes to the Glock 42 .380 caliber pistol. It’s not a surprise to us because we see stuff like this all the time, if you’re the first person to buy the gun, you might end up with basically the commercial prototype and the guy that buys the same same gun a year later will have some type of extractor, recoil spring, slide stop change, hammer spring change, take down pin, trigger pin change that your gun was found be fault with. I learned this less about 15yrs ago when a friend had a Kahr pistol that he had to send back because the trigger pins we’re falling out of them. Well, Kahr firearms has a pretty well established name in the industry but it doesn’t mean they haven’t made engineering mistakes. For all of the things that NASA has accomplished in existence, it’s has some pretty catastrophic mistakes. Things always seem like they’ll work on the drawing board but when it comes to fielding, there are too many variables that absolute testing is an impossibility.
I’ve seen too many patterns and trends go awry that the advice is to always go slow. Don’t be one of those guys that goes out and picks up a gun at a gun show and then finds out there aren’t any holsters for it. Is you picked up a pile of Magpul Gen 3 PMAGS in the last year and a half, you better go back and check them in your firearms because there were some pretty big batches that are out of spec and they are out there. You’ll usually always better to stick with Factory Magazines because they tend to get it right or improve on it rather than an aftermarket magazine that won’t know about firearm tweaks and modifications. Since we have found out there are already changes to Glock 42 Glock Factory Magazines we’ve had to make sure we didn’t have the first run mags here because we know that somebody is going to call us out on it because of the changes. We always listen to our customers and learn from them because that’s just the only way you can really stay in the know. Obviously Glock Inc. got some negative feedback and had to make changes.