Originally Posted By 70satvert:
Upper, don't stress. The lower is the important part. Where is it going? If you're shipping it to someone with an FFL say for engraving purposes, ship it normal, and they can ship it right back to you without going through an FFL even if they are out of state. If you're shipping out of state to an individual, it must go through an FFL.
Thanks for the response. So it's cool to ship in non descript package (Upper receiver only complete with BCG) via US Postal Service without declaring it's a "firearm"? I'm actually send out two uppers, one to Tx. and one to Colorado.