Personally i don't think there is a whole lot you can do. You can keep trying to contact him or you can sue him if it is worth the cost to you.
If your state has a 'small claims' court, I would suggest you begin the process. At least you can get back the cost of the barrel, install etc., and then Mark B. can start over with a different barrel maker.. Usually, small claims is rather cheap to use.. I think it's well under a C-note here in TAX HELL WISCONSIN.
You can also report his dealing to the Better Business Bureau in the town or county he does business in....
...which is about as useless as peeing upwind in a class 4 hurricane..
and if he is a FFL Dealer you can file a complaint with the ATF.
Worth a try...
Guys like this give everyone a bad name in the gunsmith business.
Oh, so true.. I cringe whenver I hear of these stories because it gives others pause when attempting a rifle build with an unknown/unseen builder....
