There have been several denial letters on the barrel engraving specifically on the USC since the barrel is easily removable. I have also heard of letters saying its good, more than likely that was because the examiner wasn't familiar with the USC and was comparing it to a 90 series where you need a press and a mill to remove the barrel. I wouldn't recommend the barrel , I mark at least 3 of these a week and normally I put it on top of the reciever.
TommyBuilt Tactical LLC 07/ SOT
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mark 23 | usp expert 45 | usp elite 45 | 50th usp 45 compact | (2) usp 40's (stainless and regular) | SL8-1 stub-converted to G36k (tbostic) | USC45 @ tbostic for UMP conversion. That's just the HK stuff! Hidden Content
Have Tbostic do this to yours, most people I show the gun to don't even notice it because it blends in so well:
wow that look really good, i may do that to mine. Did you do that? Who did the work?!?
Engraving on skullbox USC look really good
Mine is on the barrel right now, but I just converted from 45 to 9, so new barrel. Going to have Tbostic engrave the receiver under the top rail.