Yes. You certainly can send it back to Colt. They'll sell you a cylinder AND fit it for you. It probably would be a bit pricey, but Colt is generally competitive with the top notch free market smiths. The plus is that it will be done right, and will be 100% Colt.
Mark Lane to William Buckley: "Have you ever referred to Jessee Jackson as an ignoramus?"
Buckley: "If I didn't, I should have"