Monstrum Scopes / Optics Grimlock Ruger 10/22 Picatinny Rail Mount Black. All with the same functionality and reliability as standard optic mounts. The Ruger 10/22 picatinny rail mount is a dedicated mount built specifically for the Ruger 10/22 platform. Not compatible with other rifle models. Can be used to mount scope rings mounts or optics using the Picatinny 1913 or the Weaver mounting standard. Installs directly into the factory mounting holes on the Ruger 10/22 receiver using the included set screws. No additional hardware required. Rail is 4.5 inches or 11 picatinny rail slots in length Specifications for Monstrum Scopes / Optics Grimlock Ruger 10/22 Picatinny Rail Mount: Manufacturer: Monstrum Color: Black Gun Make: Ruger Features of Monstrum Scopes / Optics Grimlock Ruger 10/22 Picatinny Rail Mount Dedicated picatinny rail mount built specifically for the Ruger 10/22 platform. Not compatible with other rifle models. Grimlock Series optic mounts offer a sleeker and more distinctive design than previous generation mounts contoured to the curvature of your receiver. Can be used to mount scope rings mounts or optics using the Picatinny 1913 or the Weaver mounting standard. Installs directly into the factory mounting holes on the Ruger 10/22 receiver using the included set screws. Package Contents: Monstrum Scopes / Optics Grimlock Ruger 10/22 Picatinny Rail Mount Monstrum RM720: Scopes / Optics Grimlock Ruger 10/22 Picatinny Rail Mount Black