The Caldwell Bipod Adaptor For Picatinny Rails quickly and easily attaches to any picatinny rail, allowing any standard bipod or sling to then be attached to the integrated swivel stud. A curved "fore-end style" profile ensures the perfect fit for the bipod, so you get maximum stability. The Bipod Adaptor is lightweight, featuring machined anodized aluminum construction that provides durable and reliable performance. The two integrated fasteners ensure a secure attachment to the picatinny rail, and will not rattle loose during heavy use. Features:Allows you to attach any traditional bipod or sling to a picatinny railLightweight, durable machined aluminum constructionWon't rattle loose under heavy recoil!