Specification Brand : Ade Advanced Optics BulletPoint : Aircraft Grade Aluminum provide extra strength and durability to handle the toughest terrain and offers lifetime of use. BulletPoint1 : This mounting plate is designed to connect red dot sights to Ruger Mark I, II, III, IV, IV-Lite, 22/45 pistol. For Mark I and II, confirm it has drilled/tapped holes. Plate will not work without holes. BulletPoint2 : This red dot sight fit ADE model RD3-006, RD3-009, RD3-012(Delta), RD3-013(Bertrillium), RD3-015(Zantitium) red dot sights. BulletPoint3 : Also fit Doctor, Vortex Venom/Razor/Viper, Burris Fastfire, Meopta, Eotech mrds, , Insight red dots. BulletPoint4 : Mounting hardware comes with screws and allen wrench. Mounting hardware comes with screws and allen wrench. We are learning that depending on the date of production batches of the ruger mark series, some pre-drilled holes are slightly shorter/shallower. If so, please contact us, we will send you shorter screws. We are in the process of adding shorter screws, but it is not factory included til next production. BulletPoint5 : This optic plate is designed to attach to the two existing holes on the top of Ruger Mark Slide. No need to replace the rear sight and allowing user to co-witness the rear sight. Color : Black Department : unisex-adult ExternallyAssignedProductIdentifier1 : 813869022515 ExternallyAssignedProductIdentifier2 : 0813869022515 GpsrSafetyAttestation : 1 ImportDesignation : Imported IncludedComponents : scope mount ItemName : Ade Advanced Optics Red Dot Mounting Plate for Ruger Mark I, II, III, IV Mark 1,2,3,4 Pistol to FIT meopta, Insight, Eotech MRDS, Vortex Venom/Razor/Viper Red Dot Sights ItemPackageDimensions_Height : 7.0104 centimeters ItemPackageDimensions_Length : 1.2954 centimeters ItemPackageDimensions_Width : 4.9022 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : airsoft-gun-scope-mounts Manufacturer : Ade Advanced Optics Material : Aluminum ModelName : Athlon Armor Cantilever Scope Mount 30 mm 20 MOA ModelNumber : 702010 NumberOfBoxes : 1 NumberOfItems : 1 PackageLevel : unit PartNumber : MK3 Pattern : Solid ProductDescription : The plate fits following models. Mark I – MUST confirm it has drilled/tapped holes Mark II – MUST confirm it has drilled/tapped holes Mark II 22/45 – MUST confirm it has drilled/tapped holes Mark III Standard Mark III Bull Barrel Mark III Competition Mark III Hunter Mark III 22/45 Lite Mark III 22/45 Target Mark III 22/45 Threaded Barrel Mark III 22/45 Bull Barrel Mark III 22/45 Hunter Mark IV Standard Mark IV Target Mark IV Hunter Mark IV Competition Mark IV Tactical Mark IV Hunter Mark IV 22/45 Lite Mark IV 22/45 Tactical ProductSiteLaunchDate : 2020-03-20T07:00:00.000Z Style : Utilitarian SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 49000000 WarrantyDescription : Lifetime warranty