Williams Gun Sight Target Globe Front Sight w/ Attaching Base Ruger American .22LR Black. It comes complete with a selection of inserts. It mounts easily to the attaching base with a knurled locking screw. Height of the target globe sight is .545 from center not including the attaching base. Includes attaching base for Ruger American (uses screw from existing factory front sight) and insert card. Specifications for Williams Gun Sight Ruger American .22LR Target Globe Front Sight w/ Attaching Base: Manufacturer: Williams Gun Sight Front Sight Color: Black Gun Make: Ruger Gun Model: Ruger American Rifle .22 Long Rifle Color: Black Fabric/Material: Metal Front Material: Metal Gun Type: Rifle Weather Resistance: Yes Included Accessories: Attaching Base Features of Williams Gun Sight Ruger American .22LR Target Globe Front Sight w/ Attaching Base: The Williams Target Globe Front Sight is adaptable to many different rifles for target competition shooting. Included Accessories: Includes attaching base for Ruger American (uses screw from existing factory front sight) and insert card. Package Contents: Williams Gun Sight Ruger American .22LR Target Globe Front Sight w/ Attaching Base What firearm models does the manufacturer say Williams Gun Sight Ruger American .22LR Target Globe Front Sight w/ Attaching Base is compatible with? The manufacturer says that Williams Gun Sight Ruger American .22LR Target Globe Front Sight w/ Attaching Base is compatible with Ruger American Rifle .22 Long RifleWilliams Gun Sight 71079: Target Globe Front Sight w/ Attaching Base Ruger American .22LR Black