I have always heard you guys refer to grip angle but never really understood what you meant. I have been shooting a glock for a while and I am transitioning back to my usp 45 after a year or so. I have been disappointed with my shooting on my usp. I do believe grip angle may be a factor. the usp seems to be more of a 90 degree angle from the slide and the glock seems to be more like 100 or 110. Maybe this is something I need to think about when shooting my USP 45. You would think if your sights are aligned then it wouldn't matter what gun you shoot, and technically it may not, however if you don't shoot ALOT when switching from glock to USP I think it can be a factor. Any thoughts?