What calibre handguns are compatible with the Kleenbore A191 bore brush?

The Kleenbore A191 is specifically designed for bore diameters ranging from .40 in to .41 in. It is fully compatible with .40 S&W, 10mm Auto, and .41 Calibre or .41 Magnum handguns, ensuring proper contact with the rifling grooves without risking jams or inadequate scrubbing.

What cleaning rod thread pattern does the A191 brush require?

This brush features a standard American #8-32 male thread pattern. It attaches directly to most standard handgun and rifle cleaning rods, though it is incompatible with Parker-Hale style English threads or shotgun rods utilizing 5/16"-27 threads unless an appropriate thread adapter is used.

Can I use aggressive copper solvents with the Kleenbore A191 phosphor bronze brush?

It is not recommended to use aggressive ammonia-based copper-dissolving solvents with this brush, as strong chemical formulations will attack and quickly degrade phosphor bronze over time. If you require heavy copper stripping, you should use a nylon bore brush instead to preserve the bristle lifespan.

Will the phosphor bronze bristles scratch the steel rifling inside my 10mm pistol barrel?

No, the phosphor bronze material used in the A191 is significantly softer than factory barrel steel. Combined with its straight wire, non-crimped bristle design and looped core end, it safely scours out lead deposits, burnt powder residue, and fouling without damaging or scratching your firearm's rifling.

.40/10mm Bore Brush - Kleenbore A191

The Kleenbore .40/10mm Handgun Phosphor Bronze Bore Brush (Model A191) is a dedicated barrel cleaning accessory engineered for handguns chambered in .40 S&W, 10mm Auto, and .41 Calibre / .41 Magnum. Built with straight phosphor bronze wire bristles rather than crimped alternatives, it delivers a dense, stiff scrubbing face designed to scour out lead deposits, copper fouling, and burnt powder residue without causing rifling wear or scratching barrel steel. Sized specifically for pistol barrel lengths, it features a twisted wire core with a looped end to protect the bore crown during manual cleaning.

Key Features

Straight Wire Bristle Design: Uses non-crimped, straight phosphor bronze bristles to provide a stiffer brush face that resists collapsing under mechanical pressure.
Safe Fouling Removal: Phosphor bronze construction is softer than barrel steel, allowing thorough scouring of lead and powder buildup without damaging rifling grooves.
Standard Rod Compatibility: Fitted with a standard American #8-32 male thread to connect directly with standard handgun and rifle cleaning rods.
Core Protection: Formed with a twisted wire stem featuring a looped end to prevent exposed sharp metal from scratching the internal bore surface.

Specifications

Model: A191
Calibre Compatibility: .40 S&W, 10mm Auto, and .41 Calibre / .41 Magnum (bore diameters from .40 in / 10.16 mm to .41 in / 10.41 mm)
Bristle Material: Straight phosphor bronze wire
Core Material: Twisted wire with looped end
Thread Pattern: Standard American #8-32 male thread
Length: Approximately 50 mm to 55 mm overall brush length
Weight: Under 15 grams
Operation: Manual non-powered

Who is the Kleenbore .40/10mm Handgun Phosphor Bronze Bore Brush for?

IPSC and Service Pistol Target Shooters — requires a dedicated handgun phosphor bronze bore brush with an industry-standard #8-32 male thread to rapidly scour high-volume lead and burnt powder deposits from .40 S&W competition barrels without eroding the rifling.
Hunters Maintaining Large-Calibre Handguns — relies on a precise .40 in (10.16 mm) to .41 in (10.41 mm) bristle diameter to ensure complete, full-circumference rifling contact when cleaning 10mm Auto and .41 Magnum sidearms.

Less suitable for: Firearm bores measuring outside the .40 in (10.16 mm) to .41 in (10.41 mm) diameter range, cleaning rods using Parker-Hale or 5/16"-27 shotgun threads without adapters, or maintenance routines using aggressive ammonia-based copper-dissolving solvents, which require a dedicated nylon bore brush.

SKU	KLB40988LP
Model #	A191
Brand	Kleenbore
Shipping Weight	1.0000kg

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Kleenbore A191 Handgun Bore Brush Phosphor Bronze 40 10mm

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