Bore Tech Proof Positive Nylon Rifle Bore Brush 17 Caliber 5-40 Threads 3PK

Bore Tech's Proof Positive Nylon Bore Brushes have twice the amount of bristles compared to the competition, resulting in double the scrubbing action and faster cleaning. These brushes feature oversized bristles for extra rigidity and non-brass cores and couplers which prevent false indication of copper fouling remaining in your bore.