Enjoy optical superiority with Weaver's Tactical Multi-Slot Bases. These Picatinny bases are designed for specific models of firearms and 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. Product Features Compatible with Picatinny and Weaver style rings Aircraft-grade 6061-T6 aluminum with Type-III hard coat anodized finish Provides additional 1-inch of forward length for more mounting options Made in America