If you asking about the lugs, cocking ramp and primary extraction cam, those high firction areas, most any commercial bolt or white lithium grease applied sparingly is good. I have a tube of Shooters Choice in my cleaning box, a tube of TM in the gun-reloading room and lithium on the work bench. I don't have a preference which I use.
Before applying any grease those parts they should be cleaned otherwise your just mixing any crud with the grease. Its a good way to gall the lug and abutments.
For the rest of the parts, interior of the bolt bodies, firing pins and etc I use Break-Free.
Bill
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