Can anyone comment on the legality of buying/selling threaded barrels for the P99? Is it a state to state thing these days? I know Earls has some for sale, but I'm not sure what's required to buy/sell one legally. Thanks in advance for any info.
I don't think the issue is with the threaded barrel so much as what one may attach to it. While not exactly a direct answer to your question, this company has a good description of the legality of suppressors and the legal process along the way to ownership:
I know most states, allow it. Like most said having a threaded barrel is fine (flash supressors etc can be legally attached), but where you buy it can be a issue. I purchased one and got hosed, because it was bought from germany. It need some tax thing so the BATF took it. However it is legal to own the barrel.