Ultra-light Harris Bipods are lightning quick and quality manufactured with heat treated steel and hard alloys. These adapters allow you to match any Harris Bipod to your favorite firearm. Some of these adapters will require minor stock or fore end inletting for proper fit. Adapter only, see below for fit/application. Bipods sold separately.FeaturesAllows mounting of stud on hollow plastic fore-endsFlange is 5/8 inch wide by 1 3/8 inch long.The shank is 5/16-inch diameter with 10-32 threaded hole.Stud and washer providedThe purpose of the big-headed flange nut is to provide more support for the sling stud on thin walled fore-ends