Product DescriptionThe Weaver Mounts Top-Mount Base #88 delivers a rugged, one-piece scope mounting solution for Mossberg 500AS and 600 shotguns. Precision-machined from lightweight aluminum to exacting tolerances, this base uses Weaver&';s proven cross-lock design to resist recoil and keep your rings firmly in place. Finished in gloss black to match traditional receivers, it includes mounting hardware for straightforward installation.Product Highlights Precision-machined aluminum construction for a custom, secure fit Rock-solid Weaver cross-lock design keeps rings tight under recoil One-piece Top-Mount Base #88 for Mossberg 500AS (pre-1997) and 600 Gloss black finish pairs cleanly with blued receivers Mounting hardware included; compatible with Weaver-style rings Specs Product Type: Top-Mount Scope Base Series/Model: #88 Material: Aluminum Finish: Gloss Black Pieces: 1 Compatibility: Mossberg 500AS (pre-1997) and 600 shotguns Includes: Mounting Hardware Country of Manufacture: United States of America UPC: 076683480880 Manufacturer Part Number: 48088 Brand: Weaver Mounts Shipping Weight: 0.230 lb Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.