i recently got a new g2c at rural king, when i got home i noticed the top of the barrel above the serial number has wear streaks on it and the inside had lots of what looked like copper fouling. my older g2c that i got in december 2018 did not look like this when i got it at my local shop. has anyone elses have this on a new gun? I cleaned the gun, the inside looks good but the wear on top is very noticable. thanks for any help.