The TEKR36AR10 by Tekmat is an AR-10 gun cleaning mat with a size of 12 x 36 inches and a thickness of 1/8 inch. It offers a generous size to efficiently disassemble and clean your firearm without the inconvenience of moving parts around excessively. Additionally, the mat features an insightful overview of the AR-10\'s history and an easy-to-understand diagram of the AR-10 parts, enhancing your knowledge as you maintain your firearm.