Bore Tech Nylon Pistol Bore Brush .40/.41/10mm 8-32 Threads 3PK

Bore Tech's Proof-Positive Pistol Cleaning Brush Nylon is 100% barrel safe and sets the benchmark for all other nylon brushes. This is due to the superior construction and engineered features that are incorporated into each and every brush. Unlike phosphor bronze bristled brushes, the premium Proof-Positive Nylon Bore Brushes are strongly recommended when using fast acting copper removing cleaners. This is due to the fact that traditional phosphor bronze brushes contain over 90% copper in their composition and will turn patches blue when in contact with most copper removing cleaners. With barrel safe, non-brass cores and threads Bore Tech's Proof-Positive Nylon Bore Brushes are not affected by copper removing cleaners and will eliminate blue patches and the false indication of copper fouling that is associated with traditional phosphor bronze brushes. All Proof-Positive Nylon Bore Brushes have twice the amount of extra ridged nylon bristles and each caliber has specifica...