The Forster Universal Sight Mounting Fixture is a precision tool designed for drilling and tapping holes for scope mounts, receiver sights, and shotgun beads on various guns.
It features adjustable "V" blocks, a sliding over-arm with standard hole spacing, and interchangeable drill and tap guide-bushings for accurate alignment and drilling.
The main body is made of cast aluminum, and it comes with a Drill and Tap Bushing Set for 6-48, with other bushings available for purchase.