Just a quick video about crowning and threading. I have seen some very poor jobs done to perfectly fine barrels and just wanted to share this information with you all.
Now what I want to know is what have been some of your experiences with your barrels and accuracy?
If its not a receiver its simply not a firearm and not regulated,
the fact you have a local business and are not handling any regulated items, receivers
or suppressors makes this a go
Just know your receivers and make it clear to anyone shipping you parts that if they send you any regulated part(s) that they can expect to be picking it/them up from your local Sheriff
There’s a local guy here that is an FFL and used to be an authorized Remington service center (I believe he retired some number of years ago). He does outstanding work, but will not cut and thread a rifle barrel down under 16" -claiming it’s illegal. Obviously he’s not up to speed on AR pistols and such, but being retired he only does what he wants. On the flip side…
I send my stuff out to a guy in PA that’s not an FFL. I’ve sent him whole slides from handguns for barrel threading. He likes to have the entire slide so he can cut the shoulder in the proper location and test cycling clearances and so on.
Bottom line is I see no issue with you doing machine work on non-serialized components.