Yankee Hill Machine M-Lok Hand Stop Black Knurled Aluminum Hardcoat Anodized. The textured front side is for superior traction on barriers and obstacles. The unit allows the use of a Q.D. Sling Swivel from either side. Also allows the use of Clip or Safety Lock Slings on the front slot. Made from hardcoat anodized 6061-T6 aluminum. Includes all mounting hardware. Requires 1/8in Hex Allen Wrench to install. Specifications for Yankee Hill Machine M-Lok Hand Stop: Manufacturer: Yankee Hill Machine Color: Black Fabric/Material: 6061-T6 Aluminum Length: 1.75 in Mount Type: M-LOK Finish: Hardcoat Anodized Weight: 0.75 oz Features of Yankee Hill Machine M-Lok Hand Stop Height off the hand guard: 1 1/4in Accepts Q.D. Sling Swivel on either side Accepts Clip or Safety Lock slings on the front slot Can be mounted on the hand guard in reverse as a barricade support Package Contents: Yankee Hill Machine M-Lok Hand Stop Mounting Hardware Yankee Hill Machine 5405A: M-Lok Hand Stop Black Knurled Aluminum Hardcoat Anodized