Real Avid AR15 Master Armorer's Mat. This massive mat will protect your large gun parts while the added organization trays will hold every medium and small component making sure you dont lose any parts in the process. This isnt just a mat its the future of gun building. Specifications for Real Avid Master Armorer's AR15 Mat: Manufacturer: Real Avid Condition: New Gun Model: AR-15 Features of Real Avid Master Armorer's AR15 Mat: Expansive non-skid backed work area Enlarged detailed AR15 parts view of Upper Receiver assembly Lower Receiver Assembly Bolt Carrier Group and Barrel Assembly Padded oil and grease resistant surface Integrated parts and tool storage tray Detachable small parts storage case Package Contents: Real Avid Master Armorer's AR15 Mat 47.25" x 19.625" Mat w/ Integrated Parts Tray Detachable Small Parts Compartment Storage Bag What firearm models does the manufacturer say Real Avid Master Armorer's AR15 Mat is compatible with? The manufacturer says that Real Avid Master Armorer's AR15 Mat is compatible with AR-15Real Avid AVMAM-AR: AR15 Master Armorer's Mat