I shot about 150 rounds today with the small back strap and at times I would feel a grittiness in the trigger pull. That was my original complaint I mentioned here. I just now change the back strap to the medium one. I think I'll be able to shoot better with it and not have complaints about the trigger. The P-10 barrel is a massively built barrel and the gun is very accurate. It really make the Glocks look pretty wimpy in every way.