BILLION DUO Cantilever Scope Mount

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The BILLION DUO L3212 is a dual-ring cantilever scope mount designed to fit both 30mm and 25.4mm (1-inch) scope tubes on any standard 20mm Picatinny or Weaver rail. It also doubles as a flashlight mount base, offering versatility for multi-accessory setups. Overall, it presents a practical and affordable option for shooters looking for a flexible mounting solution without investing in multiple separate accessories.
Key Features & Specs
| Compatibility | Fits 30mm and 25.4mm (1-inch) scope tubes; mounts on standard 20mm Picatinny and Weaver rails |
|---|---|
| Design | Cantilever dual-ring configuration that extends the scope forward for improved eye relief and balance |
| Multi-Use | Integrated flashlight mount base allows simultaneous attachment of a tactical light alongside the scope |
| Material | Constructed from aluminum alloy for a balance of lightweight use and durability under recoil |
| Model | L3212; includes hardware and rings for a complete out-of-the-box installation |
| Installation | Tool-assisted ring and base screws allow secure, repeatable zero-return mounting without permanent modification |
| Finish | Matte black anodized finish provides low-profile aesthetics and corrosion resistance |
Best for: Budget-conscious rifle and airgun owners who want a single versatile mount that accommodates different scope tube sizes while also supporting a tactical flashlight on a Picatinny rail.