Just for Grins and Giggles.
Many Lustra ago, when my profession was Gunplumbing, The SA Replicants made by Armi San Marco were "Dead Ringers" for second Gen Colts. Much as Pietta are today. In those days, ASM made some truly fine guns. Very easy to "set up" for CAS. I don't remember exactly which, but many of the Lock Works parts could and would interchange with a Colt. This was, of course before ASM quality and quality control went into the Krapper. A true shame they (ASM) IMPLODED.