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. Type 1-Piece Base Model Multi-Slot Base Style Extended Finish Black Anodized Pieces 1 Series Extended Multi-Slot Base Gun Type Rifle Material Aluminum Mount Type To Receiver Rings Included No