Pro-Shot .308 Cal AR-10 Military Style Nylon Chamber Brush 30NCH

The Pro-Shot .308 Cal / AR-10 Military Chamber Brush is a dedicated tool for clearing carbon from the chamber and locking lugs of .308 Win and 7.62x51mm rifles. While standard bore brushes only hit the chamber walls, this brush uses a stepped geometry to reach the "star chamber"—the critical area where the bolt locks. This mechanical scrubbing ensures reliable extraction and consistent bolt lockup.

Effective chamber maintenance requires more than just solvent; it needs targeted friction. This two-stage design provides simultaneous contact with both the chamber walls and the irregular lug recesses that usually go untouched. By using stiff nylon bristles instead of bronze, the brush maintains its shape and cleaning power even when used with aggressive copper-removing chemicals, preventing bristle breakdown over time.

The stepped nylon bristles scrub the chamber and locking lugs in one pass, while the twisted brass core handles the pressure of heavy carbon removal. With standard 8-32 threading, it fits most rods and handles, giving you the leverage needed to clean the exact spots where buildup causes malfunctions.

Features

• Two-stage stepped chamber geometry + dual-diameter bristle sections for simultaneous cleaning of chamber walls and locking lug recesses
• Stiff heavy-duty nylon bristles + solvent-resistant polymer structure maintain scrubbing rigidity with copper and carbon solvents
• Heavy-duty twisted brass core + reinforced wire construction prevents core breakage during high-friction chamber cleaning
• 8-32 standard American threading + universal rod compatibility integrates with most rifle cleaning rods and chamber tools

Technical Specifications

• Brand: Pro-Shot Products
• SKU: 30NCH
• Caliber Compatibility: .308 Winchester / 7.62x51mm NATO / AR-10 pattern rifles
• Brush Type: Military-style chamber brush
• Geometry: Two-stage stepped military diameter
• Bristle Material: Stiff heavy-duty nylon
• Core Material: Twisted brass wire
• Thread Type: 8-32 standard American
• Total Length: Approximately 3 inches
• Forward Brush Diameter: Approximately 0.30 inches
• Rear Brush Diameter: Approximately 0.55 inches
• Function: Chamber and locking lug recess cleaning
• Origin: Made in the USA

Carbon fouling in the AR-10 star chamber isn’t cosmetic—it’s a reliability problem that can cause failures to extract and inconsistent bolt lockup. The Pro-Shot 30NCH chamber brush is engineered specifically to address that mechanical issue with the geometry, materials, and solvent resistance required for serious maintenance. Get the correct chamber cleaning tool from SMKW, the trusted source for professional-grade firearm maintenance equipment.