What makes the Real Avid AR15 Smart Mat so smart? Well, it was designed by AR15 owners for AR15 owners with insight and innovations made through real world needs and experiences. This 43" x 16" padded cleaning mat protects your work surface and guns while keeping parts organized and close at hand. The super-tough padded core has an oil and solvent resistant coating, making cleanup easy. An ingenious attached Parts Keeper Tray with a magnetic compartment ensures pins, springs, and bolts are never lost again. Illustrated disassembly instructions are printed directly on the AR15 Smart Mat for immediate information.