Well after lots of badgering the folks at Model 1 Sales have offered to have the bores of the AR 15 uppers they sent me chrome plated. The owner says that the chambers have to be opened up "half a thousanth". Don't the barrels have to be manufactured with tolerances to allow for the chrome application? After hassling with these folks I don't trust them very much but they won't give a refund even though I caught them in a couple of lies. Should I cut my losses and just sell the uppers to someone who doesn't care about the chrome issue?