U.S. Optics 3 Hole MGM Folding SwitchView Throw Lever Matte Black Small. S. Optics 2-Hole Switch View Lever is specifically designed to fit Legacy B-Series and Foundation Series scopes. Attaching the lever to the power collar allows the shooter to quickly adjust their optics magnification by gently rotating the lever. Length of lever: 0.874 in. Specifications for U.S. Optics 3 Hole MGM Folding SwitchView Throw Lever: Manufacturer: U.S. Optics Color: Black Length: 0.874 in Fit: Universal Finish: Matte Condition: New Gun Type: Universal Gun Make: Universal Gun Model: Universal Size: Small Features of U.S. Optics 3 Hole MGM Folding SwitchView Throw Lever: Length of lever: 0.874 in Weight: .06 lbs Dimensions: 2 x 2 x 2 in Package Contents: U.S. Optics 3 Hole MGM Folding SwitchView Throw Lever What firearm models does the manufacturer say U.S. Optics 3 Hole MGM Folding SwitchView Throw Lever is compatible with? The manufacturer says that U.S. Optics 3 Hole MGM Folding SwitchView Throw Lever is compatible with UniversalU.S. Optics SVL-203: 3 Hole MGM Folding SwitchView Throw Lever Matte Black Small