This bipod is easy to use and is designed with lightweight aluminum. The legs of the bipod feature a Posi-Lock to stabilize your shot and prevent the legs from tipping. The legs are also extendable and will fold up for quick and easy storage. The rubberized feet also offer you a more stabilized shooting position. Protected by a One Year Warranty. Minimum height: 8-Inch Maximum height: 10-Inch Applicable Firearms: AR-15, M16 picatinny/weaver style rails. Rail type: Picatinny/Weaver style for end rails Adjustable height: 8 -10 Weight: 0.65 lb Rubberized feet for maximum stability