WOLTIS Bipod Mount Adapter for Rifle - Harris Type Bipod Adapter,Sling Swivel Stud Mount for Picatinny/Weaver Rail This bipod adapter fits for 20mm picatinny / Weaver Rail. Attaches to Harris type bipod,AVAWO Hunting Rifle Bipod , CVLIFE 6-9 Rifle Bipod ,Blackhawk bipod, etc. Connect a two point rifle swivel for a standard rifle sling, such as Ten Point Gear Gun Sling Paracord 550, Braudel 2 Point Rifle Slings, Allen Rifle Sling, etc. Machined from 6061 aircraft aluminum alloy with black matte finish. Weights only 1.66 oz/47 g. Very easy to install.