I've seen/bought really old NIB handis lately. Going back to NN serial numbers. I assume that you may always run across older handis sold new, so it is worth knowing when things changed. Just ordered a .44 mag from an FFL. The FFL says that it has a CA serial number. Am expecting SB1, no sights, syn stock, and a regular bore, but won't know for sure til I see it.
When were bores oversized?
What is the correct size bore?
When did they lose iron sights?
When did they switch to SB1?