I have seen this done but I have no response from the OP.
Does anybody know who will install Trijicon HD night sights on my Shield. Trijicon says they do not make them for that model but they do for other M&P pistols. Is machining involved? These sights look like a cross between XS Big Dots and standard three dots with a wide notch for us older folk. They are expensive but look to be worth it.

Trijicon HD™ Night Sights