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The IOSSO AR-15/AR-308 Gas Tube Brush Refill 2 Pack (19127) comes with two brushes that are sized to close tolerance for precision cleaning of the AR gas tube. The gas tube brush was designed to be used with the clear guide tube which is included in the AR Rifle Cleaning Kits and the Gas Tube Cleaning Kit. The brushes are made with a fiber that is cobalt blue which is a stiffer grade of fiber that allows for back and forth action unlike traditional brass and bronze type brushes. The fiber last approximately 8 to 10 times longer than other brushes. The brush is wound tighter and has more fiber per inch than any other brush.
12" Overall Length
Note: Guide tube needed for brush to work properly.