Pro-Shot .308 Cal/AR 10 Military Style Nylon Chamber Brush. 308 Cal Nylon Chamber Brush is the heavy-duty tool you need. These Chamber Brushes from the groundbreakers at Pro-Shot feature a superior chamber design that wounds through the coupling. Chambered for standard and star cleaning the Pro-Shot AR 10 Military Style Nylon Chamber Brush thoroughly cleans your AR platform. Thanks to a nylon bristle construction and brass core this aftermarket tool is the recommended choice of top shooters. Reach into tight areas with the Pro Shot Brush Nylon Chamber Brush that won't break down with the usage of solvents or CLPs. Specifications for Pro-Shot .308 Cal/AR 10 Military Style Nylon Chamber Brush: Manufacturer: Pro-Shot Caliber: .308 Winchester Included Accessories: Brush Features of Pro-Shot .308 Cal Nylon Chamber Brush PST-CL-J9M1 Heavy Duty Nylon Bristles Superior Chamber Brush Design with Brass Core Wound Through Coupling Dual Purpose Design for Chamber & Star Chamber Cleaning Precision American Standard #8-32 threads Package Contents: Pro-Shot .308 Cal/AR 10 Military Style Nylon Chamber Brush Pro-Shot 30NCH: .308 Cal/AR 10 Military Style Nylon Chamber Brush