Otis FG350NB 50 Cal Bronze/Nylon Bore Brush Set 8-32 Thread 2-Pack

The Otis FG350NB Bore Brush Set delivers professional-grade cleaning performance for .50 caliber and 12.7mm firearms with dual-material construction that removes fouling without damaging rifling. Each brush combines bronze bristles for carbon removal with nylon bristles for gentle barrel protection.

What Makes This Different

The dual-material design sets these brushes apart from single-material alternatives by providing aggressive cleaning power where needed while protecting delicate barrel surfaces. Bronze bristles attack stubborn carbon deposits and metal fouling, while nylon bristles sweep away debris without scratching the bore. This combination extends barrel life compared to bronze-only brushes that can cause premature wear with repeated use.

Key Features

• Dual bronze and nylon bristle construction for optimal cleaning without barrel damage
• 8-32 thread pitch fits standard cleaning rods and handles
• 2-inch overall length provides thorough bore contact
• Caliber-specific .50 cal/12.7mm sizing ensures proper fit
• Two brushes per package for extended service life
• Precision-wound bristles maintain shape through multiple cleaning cycles
• Compatible with Otis cleaning systems and universal 8-32 threaded rods

These brushes excel in high-volume shooting environments where carbon buildup becomes problematic. The bronze component handles the heavy lifting on stubborn deposits while the nylon protects the barrel's finish and rifling integrity. Law enforcement armorers and competitive shooters rely on this dual-material approach for maintaining accuracy standards without accelerating barrel wear. The brushes maintain their effectiveness through hundreds of cleaning cycles.

Technical Specs

• Caliber: .50 caliber/12.7mm
• Thread: 8-32 standard pitch
• Overall length: 2 inches
• Bristle material: Bronze and nylon combination
• Quantity: 2 brushes per package
• Core material: Twisted wire construction
• Compatibility: Standard 8-32 threaded cleaning rods

The FG350NB represents the evolution of bore cleaning technology, moving beyond single-material limitations to provide comprehensive fouling removal with barrel preservation. Professional armorers stock these brushes for their proven ability to maintain weapon systems without contributing to premature barrel replacement costs.