Otis FG520NB 20 Gauge Bronze/Nylon Bore Brush Set - 2 Pack

The Otis FG520NB bore brush set delivers professional-grade cleaning performance specifically engineered for 20 gauge shotgun barrels. This dual-bristle design combines bronze and nylon materials to remove stubborn fouling while protecting bore surfaces from scratching or wear.

What Makes This Different

Unlike single-material brushes that either scratch delicate surfaces or fail to remove carbon buildup, the FG520NB features hybrid bronze and nylon bristles in a single brush head. The bronze bristles cut through lead deposits and carbon fouling, while nylon bristles sweep away debris without damaging the bore. Each brush measures exactly 2 inches in length, providing optimal contact surface area for thorough cleaning in one pass.

Key Features

• Dual bronze and nylon bristle construction removes fouling without bore damage
• 2-inch brush length maximizes cleaning contact surface area
• Precision-sized for 20 gauge shotgun barrels (.615 inch bore diameter)
• Standard 8-32 threading fits most cleaning rod systems
• Two brushes per package for extended service life
• Heat-treated bronze bristles resist deformation under pressure
• Corrosion-resistant construction withstands cleaning solvents

Field testing demonstrates effective removal of plastic wad residue, lead deposits, and powder fouling after high-volume shooting sessions. The hybrid bristle design proves particularly effective for waterfowl hunters using steel shot loads, where plastic wad buildup can affect pattern consistency. Competition shooters report maintained accuracy through extended shooting strings when using these brushes for regular maintenance.

Technical Specs

• Gauge: 20 gauge (.615 inch bore diameter)
• Brush length: 2 inches
• Thread size: 8-32 standard
• Bristle material: Bronze and nylon hybrid
• Quantity: 2 brushes per package
• Compatible with: Standard cleaning rod systems
• Manufacturer: Otis Technology
• Model: FG520NB

Professional gunsmiths and competitive shooters choose Otis brushes for consistent cleaning performance that maintains barrel accuracy over thousands of rounds. The two-brush package ensures backup availability during critical cleaning schedules.