The OEM sight is .165" tall. I replaced the front sight on my new 17L with an Ameriglo green fiber optic sight that is .165" tall and .130" wide. Works well with the OEM adjustable rear sight
I am finding that I can't see my front sight against dark targets.
I have Dawson on my G34, plain black notch in rear and fiber optic orange in front and that's a little better but I leaning towards three dot sights.