Brownells 5.56x45mm 400 Grit Chamber Hone

Designed to smooth out rough or damaged chambers, the silicon carbide abrasive hone works in minutes to eliminate friction. It's an effective solution for sticky extraction, promoting faster and more dependable cycling. Always pair with Flex Hone oil for safe and efficient use. Utilization requires the application of Flex-Hone oil to ensure optimal performance and maintain the integrity of the tool's abrasive surface