Area 419 Anschutz Model Improved Scope Rail 15 MOA Full Slotted Top Bubble Level Black. This design made from a single piece of T7075 aluminum and machined in house on their 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 rimfire will never budge it. Bases will come Type III black hardcoat anodized and will come with the necessary wrench for torquing the clamp screws. their rail comes in a 30MOA cant as it is meant for guys pushing their 22LRs out to 300+ yards or using optics with a minimum of 60MOA internal elevation zeroing at 50y. They 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 in 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 They are good guys and the machine would already be working in the area They 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. Specifications for Area 419 Anschutz Model 1761 Improved Scope Rail: Manufacturer: Area 419 Color: Black Finish: Type III Hardcoat Anodized Fabric/Material: Aluminum Quantity: 1 Hand: Ambidextrous Gun Make: CZ Gun Model: CZ 457 CZ 455 Gun Type: Rifle Length: 8.5 in Width: 1 in Height: 1 in Weight: 0.2 lb Condition: New Gun Rail: Picatinny Country of Origin: USA Package Contents: Area 419 Anschutz Model 1761 Improved Scope Rail Area 419 419-ISR-AN1761-15: Anschutz Model 1761 Improved Scope Rail 15 MOA Full Slotted Top Bubble Level Black