Anyone have a recommended site or company that has them.

Thanks in advance

Try BH Spring Solutions. I havent tried their barrels but many of their other parts are good quality.

You can also try Midwest Gun Works and Bar Sto. I havent tried the MGW, but the Bar Sto will need fitting to work.

https://www.midwestgunworks.com/browning-hi-power/barrels.html

I have a BHP but am not sure what is meant by a threaded barrel. What is the purpose?

Threads for attachment of a suppressor, that's "silencer" for you non-gun folks.

Thanks all I'll look into those!

Yes for a suppressor, shooting at the range has been takin it's toll on my hearing over the years. Took a year to finally get it, now I'm picking what firearms to set up for it.

Thanks for the leads

I see, thanks.