Most air guns have very shallow rifling or grooves inside the barrel. A standard bore cleaning kit designed for rim fire barrels can damage the rifling, thus reducing the accuracy of your weapon. The Gamo .177 caliber cleaning kit is specially designed for cleaning the bores of air gun barrels. This three piece kit quickly breaks down and only takes up a small amount of room inside your gun case or carrying bag. A clean barrel will help you maintain a properly working weapon for a long time to come.