Bore Tech Proof-Positive Nylon Chamber Brush (AR-15 / AR-10)
A chamber brush for AR-pattern rifles with double-density, extra-ridged nylon bristles. Unlike phosphor bronze, nylon is not attacked by fast-acting copper removers such as Bore Tech Eliminator or Cu+2, so the brush does not turn patches blue and give a false copper reading.
- Twice the usual amount of ridged nylon bristles, diameter matched to the calibre
- Non-brass, double-wound core with a looped end – no sharp cut ends
- Aircraft-grade aluminium stud
- 100% chamber safe
Options: AR-15 (.223/5.56 mm) and AR-10 (.308/7.62 mm), single brush. Use: wet the brush with cleaner (Bore Tech suggests C4 Carbon Remover or Eliminator), insert into the chamber and turn 6-12 revolutions, then wipe the chamber with a patch or mop. Rinse under warm water after use. Made in USA.
Specifications:
- Bristles: nylon, extra ridged
- Core: looped-end, double-wound alloy
- Stud: aircraft-grade aluminium
- Thread: male 8-32
- Length: 76 mm (3.0″)






































