Check out Hoosier Gun Coat. He recently refinished 6 of my firearms in Cerakote and Duracoated the optics. I have no doubt he could duracoat your firearms. Does excellent work.
I just had HGC Cerakote my XDM slide and install night sights. I was well impressed with the turn around time, price, and quality. Ernie communicated well before, during, and after the work was done. I feel comfortable recommending him.