Forster Universal Sight Mounting Fixture Includes 6-48 Bushings. Forster carefully crafted this Sight & Optic Tools from steel so that they'll hold up against all odds to ensure your firearm is properly modified to your liking. The Forster 8in Universal Sight Mounting Fixture offers the most accurate gunsmithing experience yet since it's always in true alignment with the exact center of your gun barrel. Your taps will never break due to cocking since a slip bushing of the correct size is substituted for the drill bushing making this tool a worthy investment for any firearms enthusiast. Snag the Forster Adjustable Universal Sight Mounting Fixture to precisely prep your gun for the accessories it needs to deliver its best performance yet in the field. Specifications for Forster Universal Sight Mounting Fixture: Manufacturer: Forster Gun Make: Universal Gun Model: Universal Caliber: Universal Fabric/Material: Steel Color: Stainless Included Accessories: 6-48 Bushings Length: 8 in Country of Origin: USA Features of Forster Universal Sight Mounting Fixture: Helps guarantee that both spacing and alignment are straight and true Tubular magazine guns can be drilled in the same manner as other firearms by simply removing the magazine tube Standard built-in spacing increments of .500in and .860in between centers The over-arm is "keyed" and slides in a "T" slot The blocks are adjustable for height Package Contents: Forster Universal Sight Mounting Fixture 6-48 Bushings What firearm models does the manufacturer say Forster Universal Sight Mounting Fixture is compatible with? The manufacturer says that Forster Universal Sight Mounting Fixture is compatible with UniversalForster UF1000: Universal Sight Mounting Fixture Includes 6-48 Bushings