Wool Bore mop Bore Tech Proof-Positive

The Bore Tech Proof-Positive Wool Bore mops are a great tool for cleaning your barrels. They are made of barrel safe, non-brass material that eliminates the irritating false indication of copper fouling that is found with traditional brushes (with brass) when using copper removing cleaners. This gives you a much more reliable result.

Caliber .17 / 4.5 mm has 5/40" male thread. All other calibers have 8/32" male thread.