I picked up a rock island 1911 over the weekend at the 1500 gun is in good shape but it looks like someone has polished part of the barrel by the ejection port and it doesnt look like it was done the best i have polished barrels before but i was wondering if you guys knew of a concoction that would strip the finish off without sanding it like i have done in the past just trying to make it a little easier on myself