Swab-its Star Chamber Cleaning foam swabs are designed for the AR-15/M4 platforms. Each tip can be used multiple times because they can be washed with degreasing soap and water. FeaturesEasily reaches 360 degree of the Barrel Extensions chamberWings easily penetrate locking lugsDoubles as Empty Chamber IndicatorPrecision cleaning and lubricating toolShed resistant - lint and fiber freeEconomical - washable and reusable