TreeGuy,
But since you did post'd it here ... (dot dot dot). It depends. Way Back inna Wabac (Sherman and the Professor), Armi San Marco made THE reproduction Colt. Their reproduction 1873 SAA was absolutely the beez kneez spot on for a Copy Colt. ASM also manufactured some really close copies of the 1851 and the 1860. ASM introduced the Prime Never Never of an 1851 Navy in .44 and THE other prime Never Never .. The 1861 Richards Type 1, marketed as an 1860 (no rebated cylinder) and a couple of others.
Oh, Yeah, your original question ......
It will go one of two ways. You will either get and Armi San Marco that works. Or one that doesn't work. If it doesn't work, your screwed, because there are no parts available. Although you may well able to substitute Pietta for some and Uberti for some. This hold true throughout the ASM line. Their Quality Control was non-existent. Outwardly Gorgeous, inwardly KRAP .. or not. ASM Richards guns were almost universally garbage. Cimarron, EMF and Navy Arms took a bath in warranty costs until they dumped ASM.
I personally think the ASM Never Never 1861 Richards was the sexiest bit of steel ever. At one time I had 11 of them. Understanding, 8 of them were a stock of parts to keep three of them running. I finally sold all of them off. We always have the coin flip over Pietta and Uberti. Each of whom have their respective champions. Nobody champions ASM. Never ever buy one you cannot inspect first. If your not and accomplished "Tinker" .... think long and hard about it.