Bore Baby .223Cal 5.56mm AR Chamber Brushes-2 Nylon 2 Mop and 2 Bronze Chamber Brushes for .223 Caliber Firearms Fouling Removal (6 Packs) is up for auction in Sports & Outdoors. The current bid is $4.20, 78% below the $19.00 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.