Otis Variety Pack Receiver Brush, Nylon/Blue Nylon/Bronze

Amazon.com Price: $9.29 (as of 29/03/2022 23:49 PST- Details) & FREE Shipping.

The softest is nylon bristled brush, followed by slightly more aggressive blue nylon bristled brush
The most aggressive of Otis’ all purpose receiver brushes is the bronze bristled brush
Gives you the ability to scrub places where carbon, powder and copper residue hibernate

Usually ships in 24 hours