Monstrum Sidewinder Scope Mount w/ Modular Red Dot Mount 34 mm Diameter RMR Footprint Black. 45 degree offset base allows for mounting of secondary red dot sight or iron sights for use at closer ranges. Mounts to any flat top Picatinny platform. 2 inches of forward extension allows extra flexibility for optimum eye relief and shooting position Available with Docter footprint RMR footprint T1/T2 footprint or picatinny red dot base. Please refer to the compatibility chart graphic before purchasing. Package includes multiple sets of screws. Screws are of differing length for compatibility between red dot models. Use the screw set that matches the depth of your red dot mounting holes. Specifications for Monstrum Sidewinder Scope Mount w/ Modular Red Dot Mount: Manufacturer: Monstrum Color: Black Features of Monstrum Sidewinder Scope Mount w/ Modular Red Dot Mount Dual ring scope mount for 30 mm tube scopes tubes with integrated 45 degree canted micro red dot base. 45 degree offset base allows for mounting of secondary red dot sight or iron sights for use at closer ranges. Mounts to any flat top Picatinny mounting platform. Package Contents: Monstrum Sidewinder Scope Mount w/ Modular Red Dot Mount Monstrum ZS137R: Sidewinder Scope Mount w/ Modular Red Dot Mount 34 mm Diameter RMR Footprint Black