CVA Cascade 20MOA Picatinny Rail DS620B

The CVA Cascade 20MOA Picatinny Rail DS620B is the ultimate solution for shooters who demand maximum precision and reliability from their firearms. Designed by CVA, a leader in tactical optics and mounting systems, this rail offers a 20‑minute‑of‑angle (MOA) rise that compensates for long‑range bullet drop, making it an essential upgrade for hunting, competition, and tactical applications.

Key Benefits

• 20MOA Built‑In Elevation: Provides an immediate 20 MOA lift, perfect for long‑range shooting without the need for additional scope adjustments.
• Robust Picatinny Interface: Meets MIL‑STD‑1913 standards for secure attachment of optics, lights, lasers, and other accessories.
• Precision Machined Construction: CNC‑machined from aerospace‑grade aluminum alloy for unmatched durability and zero wobble.
• Lightweight Design: Optimized for minimal added weight while maintaining structural integrity.
• Easy Installation: Comes with pre‑drilled holes and a comprehensive mounting kit for fast, tool‑free setup.
• Corrosion‑Resistant Finish: Anodized black coating protects against the elements, ensuring a long service life.

Product Specifications

• Model: DS620B
• UPC: 043125516209
• Material: 7075-T6 Aluminum Alloy
• Finish: Anodized Black (Rough Surface)
• Dimensions (L × W × H): 6.2 in × 1.2 in × 0.8 in (157 mm × 30 mm × 20 mm)
• Weight: 0.45 lb (204 g)
• Mounting Pattern: MIL‑STD‑1913 Picatinny (20‑slot)
• MOA Rise: 20 MOA (≈ 0.56 in at 100 yd)
• Compatibility: Suitable for rifles, carbines, and AR‑style platforms with a flat top or mil‑spec receiver.
• Included Hardware: Four M4‑type screws, torque‑spec sheet, installation manual.

Why Choose CVA Cascade?

CVA’s reputation for precision engineering is backed by decades of research and field testing. The Cascade series, and particularly the 20MOA model, is engineered to deliver consistent elevation across a wide range of calibers and barrel lengths. Whether you're zeroing a 6.5 Creedmoor for 800 yd or a .308 Winchester for 500 yd, the built‑in 20 MOA gives you the headroom you need without sacrificing zero stability.

Installation Overview

1. Verify that the rifle’s receiver is clean and free of debris.
2. Align the rail’s mounting holes with the pre‑drilled slots on the receiver.
3. Insert the supplied M4 screws and hand‑tighten.
4. Use a torque wrench to tighten each screw to 4–5 Nm (35–45 in‑lb) for optimal clamping force.
5. Attach your optic or accessory to the rail using standard Picatinny mounts.
6. Re‑zero your sighting system, taking advantage of the built‑in 20 MOA lift for longer ranges.

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