Well, I talked with the manufacture today, and we are going forward with 4 of the 5 sizes I outlined above... I am purchasing them in a fairly small quantity, as, even in quantity, they are kind of expensive per part...

... but, the die is cast, it's going to happen! I will have test samples in 45 days, and product 45 days past that.... So, at the very least, I will be able to install proper sight blades in the GTS/T offerings that I will make more of soon! And you shooter guys, will have some options to play with?... Thanks to all for your input and help.... Best to all, til.....lat'r....GT