Using the keymod rail interface is solidly attached, great for rifles, paintball and airsoft.The handguard mount is lightweight, and very convenient to use.Made of aluminum alloy material, the product is durable and sturdy.There are four sizes for you choose, 2/3/4/5 Inch.It is ideal for attaching lights, laser, optics, bipod, and ahead grip.Item Name: HandguardMaterial:Aluminum Alloy 2 Inch (5 Slots), 3 Inch (7 Slots), 4 Inch (9 Slots), 5 Inch (13 Slots)Size:Black,3 Inch: 7.75cmx2.25cmx1.05cm/3.05inx0.89inx0.41inBlack,2 Inch: 5.75cmx3.05cmx1.3cm/2.26inx1.2inx0.51inBlack,4 inch: 9.5cmx2.1cmx1.65cm/3.74inx0.83inx0.65inBlack,5 inch: 13.5cmx2.1cmx1.5cm/5.31inx0.83inx0.59inNotes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 X Handguard1 X Hexagon Wrench1 Set of Mounting Screws