Okay I just got a new gen 4 G19. I love the gun . I got 8 mags with it as trades and was fooling around with it this morning and noticed 2 of them are not drop free type. Throw them in trash or some other option?
If it isn't too late to retrieve them, you might mark the baseplates to make them easily identifiable.
Faulty mags are great tools for practicing failures.
Poo happens in real life, so incorporating things like mag failures to drop, or feed, is good practice. I keep all my crap mags for this reason, just mark em so they don't get mixed with the good mags.
Actually, I might have kept them for some stippling practice, or to just futz with and potentially try tweaks on. But I'm a packrat of that type of stuff by nature...