Lately, I have been getting a allot of material by USPS and many choose to use the flat rate box. I really do not know how big they come but did get a 28" barrel, half stock in one. If I were shipping something out, I'd first check the USPS. ..UPS or USPS?
bedbugbilly - the first thing the Post Office lady said, "You can't mail that; unless you have a license." Mine was covered in cardboard - all 6 feet of it. "Why? It's just wood." Another customer who knew something told her, "It's a stock blank." She accepted it and besides, we both know that the USPS x-rays everything anyway and they'll see it's just wood.
The USPS has been xraying packages for years now. They also photograph every piece of mail. Makes the FBI happy