The Weaver Extended Multi-Slot Base is designed to offer superior mounting flexibility for your optic setup. Featuring an additional 1 inch of forward length, this base allows for optimal eye relief and compatibility with a wider range of scopes and accessories. Crafted from aircraft-grade 6061-T6 aluminum and finished with a matte Type III hard coat anodizing, it delivers exceptional durability and resistance to wear. Compatible with both Picatinny and Weaver-style rings, and proudly made in the USA.