Precision Reflex Forearm Swivel Sling Adapter Black. The sling adapter is attached to the forearm with a screw and black plate. Swivel is a push button quick release sling swivel that attaches to the adapter. Sling swivel adapter is constructed of T6 6061 hard coat black anodized aluminum. Sling swivel with push button release has a 1.00in ID loop. # 10-32 Steel screw with a steel bar nut. The bottom side radius is made for a 2in tube. Specifications for Precision Reflex Forearm Swivel Sling Adapters: Manufacturer: Precision Reflex Color: Black Fabric/Material: T6 6061 Aluminum Finish: Hard Coat Anodized Inner Diameter: 1 in Package Contents: Precision Reflex Forearm Swivel Sling Adapters Precision Reflex 05-070-04: Forearm Swivel Sling Adapter Black