AVAWO Hunting Rifle Bipod - 6 Inch to 9 Inch Adjustable Super Duty Tactical Rifle Bipod MaterialHardened steel, aluminum;ColorBlackLeg Height 6" / 152mm (retracted)  9" / 225 mm (fully extended Light weight : 10ozs Features:Ultra light spring loaded folding mechanism bipod;Compact and light weight;Non-rust black anodized finish;Rubber padded on top to protect forend of gun Durable with new design high quality that you can quickly attaches to sling swivel stud. Pivot model allows shooter to compensate for ground that is unlevel by up to 20 degrees. If you need buy Rifle Bipod Sling Swivel Stud Mount and Picatinny Mount Adapter, Please search:B01AAD37HO