So what is the deal with painting the bolt and barrel black? Does it have an impact on the value of the gun? I have a 1950 Tula I just picked up and the carrier, barrel and gas tube are obviously painted and the bolt is blued. The referb mark is clearly stamped on the receiver and I believe the barrel is chrome plated (I'm a bit of a newb) because it is very bright and clean. I do want to shoot it but l also don't want to devalue it either.

Also, in general, will touching up the bluing on a milsurp have a negative impact on the value? I'm not talking about a full strip and reblue, just some touchup where bare metal is showing.