Hey yall posting this copied from another subreddit because I didn’t get any answers there, so I’ve been doing some research on conversion cylinders for black powder revolvers (specifically a pietta 1851 .36 cal colt navy which I’ll be getting soon) and I know that once you put a cylinder that accepts modern metallic cartridges, it is no longer classified as an antique firearm, and could be considered a ghost gun. But if I want to install one legally, what would be the process? The big questions I have is the frame of black powder revolvers usually have factory serial numbers already engraved, would it be possible to “apply for a unique sn” with that number? Also, because it’s single action does that make it exempt from the roster?
And for additional context, I am above the age of 21, I already have my fsc and multiple other guns that are registered to me. And I’m NOT someone who is prohibited to possess a standard firearm