Pro-Shot AR-15 Brushes. 223 Caliber) is made with black heavy duty nylon bristles. Brushes are made specifically for your AR-15 and built tough so they can be used repeatedly. 8-32 thread. Upper receiver brush bolt carrier brush bore brush and chamber brush. Specifications for Pro-Shot AR-15 Brushes: Manufacturer: Pro-Shot Color: Black Package Contents: Pro-Shot AR-15 Brushes The Pro-Shot AR-15 Brushes TFR-AR is a quality addition to the Pro-Shot lineup. For more great deals on Gun Brushes by Pro-Shot please browse our Pro-Shot Gun Cleaning Kits page. Pro-Shot AR-15 Brushes