Did some quick google searching, and a search on here, couldn't find good info on shipping a rifle upper. I understand it is not a firearm, just a part. What I'm wanting to hear from people that have done it before/a lot, what is the safest way to do it. I have not shipped anything valuable before, and I want to know what to do about insuring it, which company to use, all that good stuff. Any help would be much appreciated.