Tekmat TEKR36M14: The Tekmat Springfield M14 gun cleaning mat measures 12 x 36 and is 1/8 thick. The over-sized design gives you plenty of room to disassemble your firearm and to clean it without having to move parts all over. This mat comes with an overview of the history of the M14 as well as a simple to follow parts diagram of the parts that make up your m14.