Swampfox Freedom Rings II 30mm Riflescope Rings 1.6in Set of 2. Freedom Rings II are milled from 7075-T6 aluminum and feature a scratch resistant hardcoat finish. This grade of aluminum and finish match with AR-15 receivers so we reckon its good enough to be our standard for Freedom Rings II. These rings dont need to be lapped and come with a thin no-slip material pre-installed to help your optic stay level while torquing your ring caps. Never sacrifice strength weight or appearance when you can have it all with our one-and-done second-gen scope rings. Specifications for Swampfox Freedom Rings II 30mm Riflescope Rings: Manufacturer: Swampfox Finish: Hardcoat Oxidized Base/Mount Type: Scope Mount Tube Diameter: 30 mm Gun Model: AR-15 Ring Quantity: Pair Quantity: 2 Ring Type: Ring Set Fabric/Material: 7075-T6 Aluminum Color: Black Mount Type: Picatinny Gun Rail: Picatinny Features of Swampfox Freedom Rings II 30mm Riflescope Rings Construction Material: 7075 Aluminum Finish: Scratch Resistant Hardcoat Oxidized Manufacture Method: CNC Machined Precision Matched Pairs T10 Star ring cap screws: 10 inch-pounds torque 1913 MIL STD Picatinny base screws: 35 inch-pounds torque Diameter: 30mm Centerline Height Options: 1.10 1.60 Package Contents: Swampfox Freedom Rings II 30mm Riflescope Rings Swampfox MRF30-M2: Freedom Rings II 30mm Riflescope Rings 1.6in Set of