Hey guys do you worry about copper buildup in your glock barrels? One of my G23s has 30K rounds through it. Only clean it using #9. Have only shot FMJ through it and clean it thouroughly after every range visit. It has NEVER jammed, FTE or FTF from round one. The trigger is sweet and all internal parts are original except the recoil spring. I love this gun. I was looking at the bore after the last cleaning and have noticed some copper. I have never used any copper solvent in any of my handguns, but this gun has the most use of all mine, so I was wondering if it needs a little copper solvent. Do you guys worry about it?