Leupold QR mounts allow you to remove and reattach your scope and return to within -MOA of the original point-of-impact.

The patented lever mechanism, machined to precise tolerances, engages the steel base to the ring, pulling it down and forward and locking it into its zero position. You get fast, field-proven, repeatable accuracy.

For use with Leupold QR Quick Release Rings.

These bases are designed for Thompson Center Black Diamond Rifles only.