Forward Controls Design M-LOK Hand Stop Olive Drab Green HSM ODG. From the outset HSM has been designed to be wider than the width of the MLOK handguard's mounting base width at 0.75in. HSM measures 1.25in wide and provides better traction from the increased usable contact area with the user's hand. HSM's shape is based on its functions. HSM is slightly angled at 10 degrees with a flaring at the bottom. There are flutes on the sides designed to be a resting place for the user's finger tips. The serrations are on 6 sides of HSM do a very good job providing traction. HSM is reversible depending on how the user's preference and works equally well in either direction. Specifications for Forward Controls Design M-LOK Hand Stop: Manufacturer: Forward Controls Design Fabric/Material: 6061 Aluminum Length: 1.57 in Width: 1.25 in Height: 1.1 in Size: One Size Weight: 1.38 oz Finish: Anodized Features of Forward Controls Design M-LOK Hand Stop Compatible with M-LOK platforms Shaped to encourage proper grip 10-degree angle Flutes on each side Serrations for improved traction Package Contents: Forward Controls Design M-LOK Hand Stop Forward Controls Design HSM ODG: M-LOK Hand Stop Olive Drab Green