Weaver's Tactical Picatinny Extended Multi-Slot Base provides an additional 1-inch of forward length for more mounting options. It features an integral recoil lug and no slip/strip Torx screws. Manufactured from 6061-T6 aluminum with a matte hard coat anodized finish, this multi-slot base is compatible with Picatinny or Weaver style rings. This model is compatible with Savage short action rifles with Accu-Trigger and has a 20 MOA cant for extended range optic adjustment as well as standard zero cant.