Start of lstUrls_of_images_in_html_descriptionProduct Number: 59230 Leupold mounts are every bit as rugged and dependable as the Leupold optics they’re intended to secure. With a huge variety of mounting systems, for nearly every type of firearm under the sun, you’re sure to find the perfect match for you firearm, and your style of shooting. These bases are designed for Remington 700 action firearms. Mark 4 Tactical Bases are the only bases to accommodate both the oversized 8-40 screw and a 6-48 screw, providing compatibility with the widest range of modern tactical firearms. Both styles of screws are included with each Mark 4 base. Mark 4 bases accept Mark 4 rings, cross-slot rings, and QRW / PRW rings. Made in the USA End of lstUrls_of_images_in_html_description