
Breakthrough Clean Technologies
Availability: In Stock
The Breakthrough Clean BT4445PBBB Phosphorus Bronze Bore Brush is a .44/.45 caliber cleaning tool built for shooters who take barrel maintenance seriously. If you're running handguns in these calibers and want to cut through stubborn carbon without risk of scratching, this brush does the job with a simple, effective design. The phosphorus bronze bristles and brass core are a standard in serious gun cleaning—tough enough to scrub hard buildup, gentle enough that you won't damage bore integrity over repeated cleanings.
This bore brush threads onto a standard #8-32 rod, so it integrates into any typical gun cleaning system you already own. Whether you're breaking down after a range session or maintaining a carry gun, it's the kind of simple tool that belongs in every shooter's kit. The brass core won't strip or bend under pressure, and the bristles hold their shape through plenty of use—no loose fibers ending up in your barrel.
Keep one in your range bag, your home cleaning station, or both. Bronze bore brushes are a no-frills essential that pay off every time you run a rod through your gun.
| Caliber | .44 / .45 |
| Bristle Material | Phosphorus Bronze |
| Core Material | Brass |
| Thread Size | #8-32 |
| Brand | Breakthrough Clean Technologies |
| Model | BT4445PBBB |
Yes—this brush is sized for .44 and .45 caliber barrels. It threads onto a standard #8-32 cleaning rod, so as long as your rod uses that common thread size, the brush will fit correctly.
Phosphorus bronze is softer than steel and specifically chosen for gun cleaning because it removes carbon and fouling without scratching bore surfaces. This brush won't harm your barrel when used normally with a cleaning rod.
The brass core provides structural support and durability. It threads onto your cleaning rod and won't strip, bend, or degrade under the pressure needed for effective scrubbing during regular maintenance.
The design is built for durability—the bristles are secured in the brass core to resist loosening through repeated use in typical cleaning applications.

SKU: 115723640 • Width: 1.9in • Height: 0.6in • Depth: 5.4in • Weight: 0.02oz





Breakthrough Clean Technologies
Availability: In Stock
The Breakthrough Clean BT4445PBBB Phosphorus Bronze Bore Brush is a .44/.45 caliber cleaning tool built for shooters who take barrel maintenance seriously. If you're running handguns in these calibers and want to cut through stubborn carbon without risk of scratching, this brush does the job with a simple, effective design. The phosphorus bronze bristles and brass core are a standard in serious gun cleaning—tough enough to scrub hard buildup, gentle enough that you won't damage bore integrity over repeated cleanings.
This bore brush threads onto a standard #8-32 rod, so it integrates into any typical gun cleaning system you already own. Whether you're breaking down after a range session or maintaining a carry gun, it's the kind of simple tool that belongs in every shooter's kit. The brass core won't strip or bend under pressure, and the bristles hold their shape through plenty of use—no loose fibers ending up in your barrel.
Keep one in your range bag, your home cleaning station, or both. Bronze bore brushes are a no-frills essential that pay off every time you run a rod through your gun.
| Caliber | .44 / .45 |
| Bristle Material | Phosphorus Bronze |
| Core Material | Brass |
| Thread Size | #8-32 |
| Brand | Breakthrough Clean Technologies |
| Model | BT4445PBBB |
Yes—this brush is sized for .44 and .45 caliber barrels. It threads onto a standard #8-32 cleaning rod, so as long as your rod uses that common thread size, the brush will fit correctly.
Phosphorus bronze is softer than steel and specifically chosen for gun cleaning because it removes carbon and fouling without scratching bore surfaces. This brush won't harm your barrel when used normally with a cleaning rod.
The brass core provides structural support and durability. It threads onto your cleaning rod and won't strip, bend, or degrade under the pressure needed for effective scrubbing during regular maintenance.
The design is built for durability—the bristles are secured in the brass core to resist loosening through repeated use in typical cleaning applications.
SKU: 115723640 • Width: 1.9in • Height: 0.6in • Depth: 5.4in • Weight: 0.02oz
