Fits Ruger 10/22 rifles. This Tactical Ruger 10/22 works equally well with 22LR Ruger 10/22 or 17HM2 converted Ruger 10/22s. It's precision machined to meet Mil Spec Picatinny (Weaver style) dimensions, mounts with four screws (included) and is finished matte black. You'll need a good set of rings... We recommend our Keylock or Warne rings. This is a standard tactical mount. We also have special purpose 15 MOA Mount. Click Here to see all of our Ruger 10/22 Scope Mounts and Scopes!