Why do you want to send it to Nighthawk? I am sure I'll trigger a few people with this but personally I have not been impressed with their Colt modifcation work over the last few years. It seems the attention to detail just isn't there, especially compared to all the one man custom shops out there. Especially on older Colt's that need the extra attention due to their janky lines. Add to that Nighthawks current back log, I would be looking at Don Williams, Greg Derr, Integrity Arms, Evolution Armory, or KGB to work the gun over right.