I've polished all my Kahr barrels. They polish up very easy and shiny as can be. Shouldn't effect performance one bit, keep it oiled up as normal.
The slide itself is much tougher to polish, I did some on my PM45, no where near mirror polish but plenty shiny.
The barrel as I said is easy on a bench grinder buffer wheel. 5 minute job with a 3 minute coffee break.
In Memory of Paul "Dietrich" Stines.
Dad: Say something nice to your cousin Shirley
Dietrich: For a fat girl you sure don't sweat much.
Cue sound of Head slap.
RIP Muggsy & TMan
"If you are a warrior legally authorized to carry a weapon and you step outside without that weapon, then you become a sheep, pretending that JOCKO will not come today."