Setting up the thinner back strap returns the grip sizing to that of a standard Gen3 design, whilst setting up the thicker backstrap adds an extra 0.08 inches of grip circumference for shooters with more substantial fingers. Regardless of how the grip is configured, the grip angle stays the identical. https://buy-a-glock-online02331.dm-blog.com/32907579/how-glock-can-save-you-time-stress-and-money