Edward, thank you for the smile!
I shipped my DB9 back in the black plastic hard pack it originally came in. Be sure to include a magazine and the lock it came with. Ever the analist, I wrapped the gun and mag in two soft cotton shoe polishing mitts I got while staying at a Raddison in Evansville IN for several months...but I digress. Be sure to include a letter describing your issues, serial number, return address, contact info, next of kin, blah, blah, blah
Anyway, I then wrapped the hard pack in brown shipping paper (really), stuck on the shipping label and a couple months later I got my new gun back.
Good luck, Bill