Keep your .22 and 5.56 rifles running clean with the Birchwood Casey .22/5.56 Bore Sweeps. Sized specifically for .22 and 5.56 bores, these 4" sweeps help clear out carbon buildup, fouling and debris while staying gentle on your rifling. With 600 in the pack, you've got plenty on hand for the range bag, the field kit and the cleaning bench. Designed to fit .22 and 5.56 caliber firearms Helps remove carbon buildup, fouling and debris from barrels Gentle on rifling and bore surfaces Compact 4" size stores easily in range bags and field kits 600 pack keeps you stocked through plenty of cleaning sessions