I can't say how the gun trade uses the term, but, I hesitate to use the word "restoration", or "restore" to refer to any gun work that does not put everything back to original specs. As I see it, if everything is right except for one very minute detail that is changed, it's not a restoration. I'm not sure what a better term would be ........ maybe renovate, or refurbish.

Just me, YMMV.

SRH

May God bless America and those who defend her.