When we set out to design the CZ455 scope bases, our primary goal was to address the common issue of bases that slide around over time. While simple dovetail/set screw bases may work for some, we aimed for a solution that offered greater stability and security. Crafted from a 1-piece of T7075 aluminum and Precision-machined in-house on our HAAS VF4SS 4-axis machining center, our design securely slides onto the dovetail and is clamped down with consistent force across the entire rail, ensuring that your CZ455 remains rock-solid. For added security, we have incorporated a recoil lug at the rear of the base, providing a mechanical stop that further prevents movement. Each base is finished with a type III black hard-coat anodization for durability and comes with the necessary 2.5mm wrench for easy torquing of the clamp screws. The recommended torque specification is 22 in-lb (2.5 NM). Our rail features a 30 MOA can't, making it ideal for shooters who are pushing their .22LRs out to 300+ yd. Additionally, we've designed extra real estate at the front of the rail to allow for forward movement of your optic. This is particularly beneficial for higher-powered scopes, especially when paired with the smaller stocks typically found on rimfire rifles. While our base is slightly taller than the popular set-screw models adding approximately 1/2 inches of height to the dovetail using lower-height rings or mounts should help you retain a similar over-bore height and maintain a comfortable cheek weld without needing a riser. As an added feature, we built a level into the base, flaring the material in this area to provide optimal visibility when shooting in the prone position, allowing for minimal movement. Upgrade your CZ455 with our innovative scope bases for a secure, precise and enhanced shooting experience.