Following the success of our CZ455 scope base, and the release of the new CZ457, we knew we had to provide a true custom base for this great line of rifles.
This design, made from a single piece of T7075 aluminum and machined in house on our Haas VF4SS 4 axis machining center is designed to slide onto the dovetail and be clamped down with a force that is consistent across the entire rail – and strong enough that your CZ457 will never budge it. Bases will come Type III black hardcoat anodized and will come with the necessary wrench for torquing the clamp screws.
Our rail comes in a 15MOA, 30MOA and a 50MOA cant as it is meant for guys pushing their 22LRs out to 300+ yards.
We added real estate to the front of the rail to allow you to move your optic forward. This helps on higher powered scopes when coupled with the smaller stocks that are normal on a rimfire. This base is a little taller than the popular set-screw models (our rail adds a total of about 1/2″ of height to the dovetail) but by using lower height rings/mounts you should be able to retain a similar over bore height and maintain a good cheek weld without any riser.
Since we are good guys, and the machine would already be working in the area, we decided to build in a level to the base. The material is flared out in the area to provide optimum viewing when in the prone position without much movement if any.
Recommended torque spec: 22 in/lb (2.5 NM)
Item Nr.: 419-ISR-CZ457
