Includes: Modular Scope Rings, Red Dot Mount, Hardware Materials: 6061 Aircraft Grade Aluminum Compatibility: Rifles with Picatinny rails Weight: 5.8 oz Diameter: 30 mm Scope tubes Color: Black Warranty: Lifetime Torque Specs: Mount Base: 20 in-lbs | Scope Rings: 18 in-lbs The Monstrum Kimera Scope Rings offer maximum flexibility for your preferred rifle scope setup. They can be used as stand alone scope rings or with the included modular canted red dot base. The canted red dot base allows for mounting of a secondary sighting system for use at closer ranges. Available for either Docter or RMR footprint standard.