I'm with ken. I get the Doctel (sp) single case for $9.99 on sale. then I tape the hard case closed with ship to ship from info inside. then wrap with heavy brown craft paper and re-address the from/to. then cover the from/to onfo with heavy clear scotch brand cellopane tape. If the gun is for repair, I always get the csame hard cae back.
When you ship a gun I add LOTS of extra balsa wood blocks and bubble wrap inside the case so no matter how hard the delivery service tries they can not get the gun to move/cant inside the case. Especiall need the muzzle/front sight and the butt.