Weaver Tactical Multi-Slot Bases are picatinny bases designed for specific models of firearms that provide an additional 1 inch of forward length for more mounting options. Manufactured from 6061 T6 aluminum and protected by a matte, Type III hard coat anodized finish, these multi-slot bases are compatible with Picatinny or Weaver style rings. An integral recoil lug, no slip/strip Torx screws round out the features of these tactical bases. Available with 20 MOA cant for extended range optic adjustment as well as standard zero cant. Special-purpose tactical equipment requires specialized mounting hardware to install model-specific scopes and sights.