MDT XRS Walnut Kit w/ Vertical Grip Walnut. The machined walnut wood provides an added traditional look and feel while maintaining the function and rigidity of your chassis system. Specifications for MDT XRS Walnut Kit w/ Vertical Grip: Manufacturer: MDT Color: Walnut Handguard Material: Walnut Package Contents: MDT XRS Walnut Kit w/ Vertical Grip MDT 107149-WNT: XRS Walnut Kit w/ Vertical Grip Walnut