Never had issues with thumb safeties. Guess it's because I've been using then so long.
I agree, the grip on the EZ 9mm has to be thought about in order to make it work. Wish it were more like my XD-S where the grip safety works a lot more easily and you don't even know it's there. TBH, the...
It wasn't the ammo. I was shooting Blazer Brass and Winchester white box thru it when the FTFs were happening. After polishing the feed ramp and the feed lips on the two magazines, I had zero failures to feed after shooting 100 rounds at the range the other day.
Before I did my fix, just...
Out of the box my M&P Shield 9mm EZ would have a failure to feed about a third of the time.
The cartridge would get stuck about half way out of the magazine.
I polished the feed ramp using a rag wrapped around a pencil.
I also used an emory board to sand the feed lips, since it seemed they were...