I don't take offense to this post, as I agree that lacking fundamentals or knowledge of certain things can lead to unnoticeable differences in some changes. I'm no pro and am still not confident enough to compete, but I like to think I have good fundamentals and shoot a pistol well enough to make the call on what I think about this mod. Perhaps my performance isn't as solid as I think it is and that very well could be why. But then again I usually think I suck pretty bad at everything I do cause if I'm not doing it extremely well, I must not be doing very good at all. I'm a perfectionist. Anyhow, this statement may be a factor in my opinion, or not. I'm sure you'll conclude what makes more sense to you. Let me clarify, in an attempt to give you an idea and help to lesson the confusion, Sig has surely been shooting for YEARS longer than I have. I've only been doing it consistently for 2 years, so I'm a baby in the firearms world. I know I can hang with the boys these days, but I would personally take Sig's opinion over mine, strictly because of experience. Hope this helps. Babbling now...It doesn't seem like something so small could make much of a difference. If a person doesn't already have their fundamentals in order and a solid level of performance, it may not even seem like one.