I have the 45 and 40c. My thumb knuckle takes a beating with the 40c. Anyone else have this happen where the skin is scraped off? There was a little flap of skin but I ripped it off. I've been using the smallest backstrap and will try the medium one.
1. make sure the rear roll pin is not sticking out just a tiny bit or it will rip you up just like the picture (don't ask me how I know :? ).
2. if that picture is a good representation of your normal grip looks like it could use a little work as well. Your fingers are wrapped way too far around the front strap. which would have to put your trigger finger too far through the trigger for good trigger control. Most shooters agree shooting the M&P you should be using the pad of your finger not the first joint like on a revo. Rotating you hand around the gun a bit to reposition you trigger finger will move where the gun impacts you, it will move more into the web of your hand.
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