As I recall it, the original 1861 Special Model lock isn't readily interchangeable with the Italian reproduction lock.
They don't, but it's close. I just purchased an original Colt Special lock to put into a Colt Signature Series 2-band. It appears that the mortise will need to be expanded just a hair, mostly to the rear of the lock, to get it to fit.
I'm still debating if I want to do it or not. The old lock cleaned up pretty good, but still won't be as nice as the rest of the parts of the gun. Mostly I want quality internals.
I need to test to see if the internals will swap over to the reproduction lock plate.
Steve Sheldon
Commander
4th Louisiana Delta Rifles
NRA Certified Muzzleloading Instructor
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