I'm almost to the point of assembling my PTR-91 build, and want a finish that will work besides parkerizing. I say this because my barrel is an 18" stainless, and we all know what heppens when you mix manganese phosphate with stainless steel. It has the metal for a snack Anyway, what kind of Gun-Kote or other finish does anyone here recommend? I will not be finishing the bolt, or trunnion face. I was thinking Gun-Kote, as it seems to work well with the other weapon systems I have finished before; just no experience as to how it works with the G3.