Pro Shot Brushes were made specifically for your AR-15 and built tough so they can be used. All Pro Shot products are proudly made in the USA of all USA made components. Pro Shot stands behind all of our products and you can feel rest assured you have the finest built in USA product available.Specifications and Features: 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 All Pro Shot brushes are Proudly made of USA components and assembled in the USA, #8-32 Threads