I would like to find someone who can customize my Nighthawk GRP Recon Double Stack. I would like to have the slide milled for an Aimpoint Acro P-1 red dot. I would also like to add suppressor height sights and a threaded barrel. I've checked with several gun makers ... Wilson said they can't add sights because the dovetails are different than theirs. Let Baer and Ed Brown said they don't offer suppressor sights. Nighthawk hasn't responded. I live in Colorado but I can ship out of state for the right gunsmith. Do any of you Addicts have recommendations? Thank you!!!