I have a set of Dawson sights on my Sig 320F in 9mm that I really like. However, I would like a vertically adjustable rear. This way, I can more easily match it to my other guns without playing the front site swap game.

The LPA doesn't get good reviews and I'd rather not mill the slide for an X5 site. The Springfield XD site is supposed to work but overhang the rear of the slide quite a bit.