One of my buddies recommended I have my barrel jeweled on my Kahr K9. He was telling me that it keeps oil on the barrel, making it run smoother. I really LOVE the look of a custom jeweled trigger and barrel, but is there really anything to the smoothing out or is that just some smith telling him that to make some cash. He has all of his barrels jeweled on his guns. Also, what would be a fair price to jewel a Kahrs stainless barrel and trigger.