Quit damaging and losing parts while working on your marker with an HK Army MagMat Magnetic Tech Mat. The MagMat is built of heavy and durable yet flexible rubber material. It stays in place where you set it down without sliding. The ridged tool tray, Magnetic parts tray and raised border keep small parts like screws, springs and ball bearings from rolling away onto the floor or ground. The raised logo grips your marker without scratching for a safe and secure work surface. An O-Ring Gauge molded into the surface takes the guesswork out of quickly sizing your different seals.