Product Reviews for CB3PK - M16 AR-15 CHAMBER BRUSHES - 3 Pack M16 AR-15 CHAMBER BRUSHES - 3 Pack by Jack (2024-06-08 11:37:53) Rating: 5 / 5 - 5 - Excellent Owned Product for: less than 1 year Pros: They work great, and the chamber brush lasts a long time, the same as military issues. Cons: Other thoughts: