Swagger Stalker QD Swivel Stud Adapter Black. This allows you to Swagger your Stalker QD sling swivel to mate to any standard sling stud. This makes it much easier for the operator of the gun to attach a sling with the stud on the bottom of the stock. One stud machined in the same position as the stock studs on your STAGGER QD sling swivel. Can be installed without removing the stud from the stock. Specifications: - Mounts to any standard sling swivel - Fits only STAGGER QD sling swivels - Material: Stainless Steel Color: Black. Specifications for Swagger Stalker QD Swivel Stud Adapter: Manufacturer: Swagger Color: Black Base/Mount Type: QD mount Package Contents: Swagger Stalker QD Swivel Stud Adapter Swagger SWAG-AD-QDSS: Stalker QD Swivel Stud Adapter Black