I have a vice barrel clamp for an AR15, your welcome to use it, However Hastings is not 'Near" Omaha.
If you can wait until the Hastings Gun Show, first week end in Oct I could sent it back with an NFOA member if anybody will be coming from the east....
Or if you pay the post man and send it back when your done, I'll mail it to you.
I got it from Model One for about $25
Fluff