BoreTech AR-15 Chamber Brush nylon

Bore Tech AR-15 Chamber Brush 223 556 is a chamber brush designed for .223/5.56 mm AR-15 rifles, offering a nylon construction that is safe for the firearm?s chamber and effective cleaning, especially when used with copper-removing solvents. Bore Tech?s Proof-Positive Nylon Chamber Brush was developed to replace traditional phosphor bronze brushes in situations where users want to avoid false blue staining on cleaning patches and the resulting incorrect interpretation of copper fouling.

The brush?s stiff Proof-Positive nylon bristles are caliber-specific, and the brush contains twice as many bristles as conventional nylon brushes. This increases abrasive cleaning power and speeds up chamber cleaning without copper-removing solvents affecting the brush in the same way they affect phosphor bronze brushes. The brush is especially recommended for use with fast-acting copper removers such as Bore Tech Eliminator Bore Cleaner or Cu+2 Copper Remover.

The construction features a non-brass, double-wound brush core with a looped end. The looped end eliminates the sharp cut ends that may be found on lower-quality brushes. The brush?s attachment fitting is made from aircraft-grade aluminum, supporting a long-lasting and high-quality construction. The male thread is 8/32, and the total brush length is approximately 7.6 cm (3.0 inches).

To use, thread the brush onto a cleaning rod, moisten it with cleaning solvent, and insert it into the chamber. Bore Tech recommends using products such as C4 Carbon Remover or Eliminator Bore Cleaner. Rotate the brush in the chamber for 6-12 turns, add more cleaning solvent if needed, and continue the process until the chamber is clean. Finally, wipe the chamber clean with a patch or mop, and clean the brush before storage.

Bore Tech AR-15 Chamber Brush 223 556 - Features:

• Product type: chamber brush
• Compatibility: .223/5.56 mm AR-15
• Brush type: Bore Tech Proof-Positive Nylon Chamber Brush
• Bristle material: stiff nylon
• Bristle construction: double the amount of extra-stiff nylon bristles
• Caliber-specific sizing: bristle diameter is tailored for the .223/5.56 mm AR-15 chamber
• Cleaning power: twice the abrasive effect compared to conventional nylon brushes
• Chemical compatibility: suitable for use with fast-acting copper removers such as Eliminator Bore Cleaner and Cu+2 Copper Remover
• Advantage over phosphor bronze brushes: does not react with copper removers and does not cause blue cleaning patches that could give a false impression of copper fouling
• Thread: male 8/32
• Length: approximately 7.6 cm (3.0 inches)
• Core material: non-brass, double-wound metal alloy
• Core end: looped end without sharp cut ends
• Attachment fitting material: aircraft-grade aluminum
• Packaging: single pack
• Country of manufacture: USA
• Instructions for use: thread the brush onto a cleaning rod, moisten with cleaning solvent, insert into the chamber, rotate 6-12 turns, add cleaning solvent if needed, wipe the chamber clean with a patch or mop, and clean the brush before storage

In summary, this chamber brush is a reliable choice for maintaining the .223/5.56 mm chamber of an AR-15 rifle when a nylon brush compatible with copper-removing solvents is desired. It reduces misinterpretations during cleaning, improves mechanical cleaning performance, and provides a durable construction for regular firearm maintenance.

Recommended use: especially suitable for regular cleaning of the AR-15 rifle chamber and for situations where copper- and carbon-removing solvents are used without the reaction typical of phosphor bronze brushes.

Product text updated on 21 July 2026.