Product DescriptionWeaver Mounts Top Mount Base 411 is precision machined to tight tolerances for a custom fit on select Thompson/Center rifles. Built from durable aluminum with a black finish, this base delivers maximum strength and features Weaver&';s rock-solid cross-lock design to keep rings secure. A reliable platform for mounting your optic, it&';s a straightforward upgrade for hunters and shooters seeking dependable alignment and retention.Product Highlights Precision-machined aluminum base for strength and long-lasting durability Weaver cross-lock design provides secure ring engagement and stability Black finish for a clean look and reduced glare Designed to fit select Thompson/Center rifle models for easy installation Includes mounting screws for a complete, ready-to-install solution Specs Product Type: Top Mount Scope Base Model: 411 Finish: Black Material: Aluminum Compatibility: Thompson/Center System 1, Black Diamond, Black Mountain, Center Woods, R55 Brand Name: Weaver Mounts UPC: 076683486325 Manufacturer Part Number: 48632 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.