Pro-Shot Products Total Fouling Removal Kit AR-15 Platform TFR (Total Fouling Removal) Kit for the AR-15 Rifle (.223 Cal.) is made with black heavy duty long lasting nylon bristles. These brushes were made specifically for your AR-15 and built tough so they can be used repeatedly. Fits Standard American Cleaning Rod with #8-32 Threads. Kit Contains the Following Brushes: Upper Receiver Brush, Bolt Carrier Brush, Bore Brush, and Chamber Brush. Item # TFR-AR Made in America since 1982, use our products once, become a Pro-Shot fan for life.