Finally got around to calling COLT to get details on factory refinishing. They want $225 for full refinish in COLT GREY for whole rifle. My rifle (6420) was scratched and sent out to be moly-coated but the previous owner specified black instead of grey, looks terrible. Anyway it soon will be restored.
The bad news is that they will only refinish the non-sear block lowers. Seems they have to remove the block to do the job and it destroys/damages the lower?!?!!?. Sounds like a little bs because so many here have had the block removed by milling. Not really a major thing, just sucks when your factory denies you service for a stupid problem they created.
Soon it will be all grey. Hopefully they can get more of the scratches out. Previous owner had AD into basement floor sending chunks of concrete blasting into it. Minor surface damage but I want it cleaned up.