The question on improved accuracy with a square notch or U-shaped is more personal. It has given me improved accuracy without sacrificing speed.

I’m still wondering if the square notch that Jeff came up with has a real accuracy advantage over the standard u-shaped one.

Also, for the front sight wondering if optic yellow would suit me better than optic orange that I have on my Glock 17 and 34. I feel that the optic yellow is not as bright which has its own pluses and minuses.