Ruger Mark IV Gun Cleaning Mat This is the perfect gun cleaning and repair mat designed specifically for your RugerA(R) Mark IV(TM). Have fun and learn while you work on your and my favorite RugerA(R) handgun. The soft top protects your gun from scratches while the neoprene rubber backing protects your work surface from chemicals while keeping everything in place. Description: 11" X 17" 1/8" thick Volcanized rubber backing Made to be used with most handgun makes and models