Bore Tech Proof-Positive nylon bore brushes are entirely safe for barrels and set the standard for all other nylon brushes due to their superior construction and engineered features. Unlike phosphor bronze bristle brushes, these premium nylon brushes are highly recommended for use with fast-acting copper-removing cleaners, such as our eliminator bore cleaner or Cu+2 copper remover. Traditional phosphor bronze brushes contain over 90% copper, which can cause patches to turn blue when exposed to most copper-removing cleaners. Featuring barrel-safe, non-brass cores and threads, Bore Tech Proof-Positive nylon bore brushes are unaffected by copper-removing cleaners, thereby eliminating blue patches and the false indication of copper fouling associated with traditional phosphor bronze brushes.

• Each non-brass, double-wound brush core features a looped end, effectively eliminating the sharp cut ends commonly found on many other low-quality brushes
• Meticulous attention to detail, coupled with aircraft-grade aluminum studs, is essential for crafting a durable, high-performance nylon bore brush, ensuring longevity and superior quality for your rifle
• The .20 Cal rifle brushes are reduced by 1 inches in length to minimize the force needed for bore traversal, thereby decreasing cleaning rod flex and mitigating potential rod and barrel damage
• Ensure absolute certainty that your rifle barrels are completely free of copper fouling, eliminating any potential confusion
• Proof-positive nylon bore brushes are equipped with twice the number of rigid nylon bristles
• Each caliber features specifically tailored bristle diameters, providing double the scrubbing action and resulting in faster cleaning