Check the listing for details. All Purpose Bronze Bristled Gun Cleaning Receiver Brushes - 3 Pack. Condition: New. Listed at 11.95 USD. These All Purpose Gun Cleaning Receiver Brushes allow you to choose the right brush depending on how aggressive a brush you need. They’re the elite in cleaning those hard-to-reach places. They give you the ability to scrub places where carbon, powder, and copper residue hibernate. These brushes are available in a variety of different tolerances. The softest is the nylon bristled brush, followed by a slightly more aggressive blue nylon bristled brush. The most aggressive is the bronze bristled brush (like these in this auction). This cleaning accessory makes a great gift for the hunter or sport shooter in your life. Large end allows for surface scrubbingSmall end lets the user scrub with precision in the hard-to-reach areas