BRKTHRU BT-308PBBCB-AR PHOSPHORUS BRZ BCG BRSH

Breakthrough Clean BT308PBBCBAR Phosphorus Bronze BCG Brush
Breakthrough durable Bolt Carrier Brush is for effective cleaning without damaging your bore. The twisted brass core keeps brush rigid and has a deeper cleaning action than Nylon brushes. The brush has a standard #8-32 thread. One per package.