Does anyone know if the standard 1911 rear sight will fit the AP-16? I'd like to replace the stock rear sight with one that has both height and windage adjustments, preferable with fiber optics to white dots on the rear blade. The black on black is really hard to see against a dark background. I see there are a lot available for 1911's but I don't know if they will fit the AP-16 dovetail without modification. Anyone swap their rear sight with an adjustable one? If so, did it require any modifications to fit? If not, can you provide a link to what you used? Thanks...