Sun Optics Ruger MK I/Ii Pre-Drilled Black Matte. Made with strength and accuracy in mind this Tactical Mount from Sun Optics includes levers that can be installed with no gunsmithing and can be installed quickly and easily by just using the right hand tightening technique. Installation screws are included in case you misplace the included screws and want to change out your scope on the field. For a no nonsense way to mount your favorite scope onto your Ruger MK frame look no further than the Sun Optics Ruger MK Pre-Drilled/Tapped Rifle Scope Mount. This mount will not allow your scope to come loose or fall off over time. Specifications for Sun Optics Ruger MK Pre-Drilled/Tapped Frame Handgun Scope Mount: Manufacturer: Sun Optics Gun Make: Ruger Additional Features: NO GUNSMITHING MOUNT Gun Model: Ruger Mark I Ruger Mark II Included Accessories: Installation Tools Gun Rail: Picatinny Quantity: each Fabric/Material: Aircraft Grade Aluminum Weight: 3 oz Width: 1 in Length: 5 in Package Contents: Sun Optics Ruger MK Handgun Mount Pre Drilled What firearm models does the manufacturer say Sun Optics Ruger MK Pre-Drilled/Tapped Frame Handgun Scope Mount is compatible with? The manufacturer says that Sun Optics Ruger MK Pre-Drilled/Tapped Frame Handgun Scope Mount is compatible with Ruger Mark II Ruger Mark ISun Optics SM4873: Ruger MK I/Ii Pre-Drilled Black Matte