Try: www.e-gunparts.com
If your Colt Stagecoach was made from 1965 - 1968 it will not have a serial number.
punch in colt gun parts on your computer and look at all the parts distributor people
numrich has parts for all kind of guns, including Colt's.
Try numrich.com
You will need a gunsmith to find out.
I myself have a cosmo colt its a great little scooter and i haven't been able to find any parts that will fit it but cosmo colt parts every thing is a fraction of a centimeter smaller or bigger
I would start with the numrich gun parts corp.They can be found on the web.
Check the barrel and frame.
Try e-gunparts.com
www.brownells.com www.colt-parts.com www.e-gunparts.com worlds largest gun parts where you can get schematic of most guns
You will have to call Colt to find out. You will have to call Colt to find out.
You will have to get a letter from Colt to find out.