Product Description The Weaver Mounts Top Mount Scope Base #19 delivers a secure, precise foundation for your optic. Machined from durable aluminum to tight tolerances, this gloss black base features Weaver&&';;s proven cross-lock design that resists recoil and keeps rings firmly in place. It&&';;s a 1-piece base intended for use in a 2-piece system and includes mounting hardware for easy installation. Product Highlights Machined aluminum construction for a custom, precise fit Weaver cross-lock design for rock-solid ring retention under recoil Gloss black finish matches popular ring and firearm finishes Compatibility includes Anschutz 153 Deluxe, CIL 900, H&R 232C & 980 Ultra, NEF 10 Gauge, Savage 99/1895 & 25 Octagon barrel, and Winchester 1903/61 round barrel/63 (rear) 1-piece base for a 2-piece system; mounting hardware included (rings not included) Specs Material: Aluminum Finish: Gloss Black Style: Weaver Top Mount, cross-lock design Series/Size: #19 Base Type: 1-piece base for a 2-piece system Includes: Mounting hardware Compatibility: Anschutz 153 Deluxe (Front & Rear); CIL 900 (Front & Rear); H & R Models 232C (10 Ga.) & 980 Ultra (Front & Rear); New England Firearms 10 Gauge Shotgun (Front & Rear); Savage Models 99 and 1895 (Front), 25 Octagon barrel (Rear); Winchester Models 1903, 61 round barrel, & 63 (Rear) Country of Origin: USA UPC: 076683480194 Manufacturer Part Number: 48019 Brand Name: Weaver Mounts 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.