This chamber brush is specifcally designed to clean all of the nooks and crannies of an AR-15 chamber, to guarantee maxiumum reliability. This tool is a must, especially when shooting dirty ammunition. Hoppe's 9 Chamber Brush Brush AR Rifles 5.56NATO / .223REM Blister Card 1323P
WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.