Mixing and matching pistol sights

[RGR3/75]

I've recently been looking at several different sights to replace my stock fixed sights on my m&p. I'm looking at dawson precision adj. rear sight with a front sight from ameriglo. On DP's website it says to match the adjustable rear with a .265" front sight but ameriglo only sells a .230". So my question is, is there some sort of matrix that shows what X size rear sights line up with X size front sights and how much play I can have with a front sight when matched with an adjustable rear sight?

 

[T. O'Heir]

"...some sort of matrix..." Not that I've ever seen.
It's best to buy a match set. A too low front sight will cause you to be shooting high.