Putting in the thinner back strap returns the grip sizing to that of a normal Gen3 product, though setting up the thicker backstrap adds an extra 0.08 inches of grip circumference for shooters with larger sized hands. No matter how the grip is configured, the grip angle stays the same. https://edwinlhlkv.frewwebs.com/33391312/buy-a-glock-online-things-to-know-before-you-buy