The Proshot 10mm/40 Cal Pistol Bronze Brush is a firearm maintenance tool engineered for scrubbing copper fouling, lead deposits, and powder residue from handgun barrels. Featuring benchrest-grade phosphor bronze bristles secured by a looped brass core, the brush is sized slightly oversized to maintain wall contact in .400-inch bores without scratching steel rifling or barrel crowns. It is fitted with standard American hardware to integrate directly into standard handgun cleaning kits.

Key Features

• Phosphor Bronze Bristles: Delivers mechanical scrubbing action to strip fouling while remaining softer than handgun barrel steel to prevent rifling wear.
• Looped Brass Core: Built with a solid brass wire core and looped end rather than cut steel wire, eliminating exposed sharp tips that could score the barrel crown.
• Brass Coupling: Equipped with an industry-standard American #8-32 male thread for direct attachment to matching cleaning rods.
• Pistol-Length Profile: Features a bristle working length of approximately 1.75 in (44.5 mm) for smooth passes through handgun and pistol-calibre carbine barrels.

Specifications

• Calibre Compatibility: .40 S&W, 10mm Auto, and .400-calibre bores
• Thread Interface: #8-32 male thread
• Brush Length: 1.75 in / 44.5 mm (working length)
• Weight: ~0.1 oz / 2.8 g
• Core and Coupling Material: Solid brass
• Bristle Material: Phosphor bronze

Who is the Proshot 10mm/40 Cal Pistol Bronze Brush for?

• IPSC Standard Division competitors — Requires an oversized 10mm pistol bore brush with an industry-standard #8-32 male thread to quickly strip lead and copper fouling from .40 S&W match barrels between training sessions.
• 10mm Auto sport shooters — Relies on a dedicated .400-calibre brush weighing approximately 0.1 oz (2.8 g) to provide firm mechanical contact against heavy powder and jacket fouling in high-pressure 10mm handgun and carbine bores.

Less suitable for: Handgun bores outside the .400-inch threshold, as it will bind in smaller 9mm or .357 bores and lack adequate wall pressure in .44 or .45 bores (use calibre-specific brushes instead), cleaning setups using non-adapted small-calibre #5-40 or shotgun #5/16-27 rods, or maintenance routines relying on aggressive ammonia-based copper-removing solvents (use a chemical-resistant nylon bore brush instead).