Description Specifications for ATN Scope Mounting System Quick Detach 1-PC Base & Ring Combo Fo: Color: Black Fabric/Material: Aluminum Alloy Base/Mount Type: Cantilever Tube Diameter: 30 mm Hand: Ambidextrous Features of ATN Scope Mounting System Quick Detach 1-PC Base & Ring Combo: Adjustable quick detach mechanism Perfect for X-Sight 4K Series, ThOR 4 Series or ThOR LT Series Retain Zero when swapping between platforms