The Area 419 ARCALOCK Adapter for Harris Bipods allows you to adapt your Harris Swiveling Bipod to the Area 419 ARCALOCK Clamp Base or any other Atlas Bipod rail Adapter. Does not include bipod or Area 419 ARCALOCK Clamp Base.Note- Harris Swiveling Bipod Adapter (Does not include clamp)COMPATIBLE ONLY WITH "S" (SWIVEL) TYPE HARRIS BIPODS FeaturesAdapt your Harris Swiveling Bipod to Area 419 ARCALOCK Clamp Base or any other Atlas Bipod rail AdapterReplaces the swivel stud mounting platformWorks with the factory tensioning screw or a KMW Pod LocMachined in house from 6061-T6Type III Black Hardcoat AnodizedDoes not work in conjunction with Area 419 Barricade Stop