Tactical Multi-Slot Bases are designed for specific models of firearms and provide an additional 1" 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.