The RAM Quick-Clean Bore Cleaner is a calibre-specific bore cleaner sized for .50 firearms. It is made for a fast clean of the barrel after shooting, removing powder fouling, dust and loose residue so the bore stays accurate and protected against corrosion. Being sized to one calibre, it fits the bore properly and does a better job than a one-size-fits-all cleaner. It is small and light enough to carry in a range bag or hunting pack for use in the field. Make sure the size matches your calibre before buying; the supplier does not list the construction, materials or length, so check the pack for details and instructions.