It is posible to bore the cylinders and have them replated. That is what Millenniun Coatings do. I think the charge is about $170 per cylinder and a set of Pistal pistons will run about $400. The BCM kit requires an exchange on your barrels which they send to Millennium for the rebore. The $800 charge from BCM is a pretty fair dealin my opinion since it is basically 1 stop shopping