I sent this slide off to CGW's for a customer (Rich63) to have a CZ Custom adjustable rear installed. The rear portion of the slide already has the Shadow sight cut but to dispel the rumor that the P-10C will take a Shadow sight, that statement is only half correct. It will accept a "fixed" Shadow sight but NOT the adjustable. Here is the result. We will figure out the correct front sight height when the gun is assembled and shot. I will report that info back in case anyone else decides to do this.