Vector Optics 30 mm 1.25in Cantilever Dovetail Rings – Extended Eye Relief Mounts for Dovetail Rails

The Vector Optics 30 mm 1.25‑inch Cantilever Dovetail Rings GenII (model XASR‑3017) offer a robust, low-profile cantilever mounting solution for riflescopes with 30 mm main tubes using 11 mm dovetail rails. Designed for precision shooters and hunters needing extended eye relief and flexible rail placement, these rings combine dependable aluminum strength with adjustable positioning and anti-retreat features.

Design Highlights & Mounting Flexibility

• 1.25 in / 32 mm Center Height: Elevated scope tube position improves cheek weld and ensures optimal eye relief—especially with larger objective lenses. ([turn0search6]citeturn0search6)
• Cantilever Structure: Extends the scope forward from receiver toward the shooter for rail space efficiency and ideal ergonomic placement. Perfect for rifles with limited rail length. ([turn0search13]citeturn0search13)
• Dovetail Rail Compatibility: Engineered for standard 11 mm dovetail rails with integrated anti-retreat pin to prevent rearward slippage under recoil. Four cross-bolts per ring ensure solid, consistent mounting. ([turn0search6]citeturn0search6)

In Use: Ergonomic & Ballistic Benefits

Whether you're shooting small-bore rifles from the bench or hunting with rimfire platforms, these dovetail rings improve your rifle’s balance and alignment. The raised forward cantilever ensures smooth scope-to-eyes alignment—eliminating cheek interference and allowing for faster transitions between positions.

In scenarios with limited rail real estate, such as AR-style forks or traditional dovetail bases, the cantilever offset lets you mount larger scopes without crowding your iron sights or accessory zones.

Build Quality & Mechanical Specs

• Material: CNC-machined from 6061‑T6 aircraft-grade aluminum—lightweight yet highly resistant to flex or deformation. ([turn0search6]citeturn0search6)
• Finish: Matte black anodized coating reduces glare and protects against corrosion. ([turn0search6]citeturn0search6)
• Weight: Approx. 94.6 g (3.3 oz) per complete pair, ensuring minimal added mass. ([turn0search6]citeturn0search6)
• Mount Elevation: 52.0 mm height with ~32 mm from base to optical center. ([turn0search6]citeturn0search6)

Package Contents

• 1× Pair of 30 mm 1.25‑inch Cantilever Dovetail Rings (XASR‑3017)
• 1× T15 Torx Wrench & Hex Key for installation

Technical Specifications

Why Choose These Cantilever Rings?

These cantilever dovetail rings are ideal when mounting scope with larger objective lenses on rifles where rail length or mounting clearance is tight. They bring your optic into the optimal eye position while preserving zero and providing a secure dovetail attachment. Suitable for classic rimfire rifles, vintage platforms, and modern striker-fired builds with minimized rail real estate.

Summary

The Vector Optics 30 mm 1.25in Cantilever Dovetail Rings (XASR‑3017) deliver high-grade mechanical reliability and ergonomic scope alignment. With aircraft-grade alloy, solid four-bolt dovetail mounting, and precise height positioning, these rings offer a significant performance upgrade for shooters using 30 mm optics on dovetail platforms. Lightweight, durable, and engineered for accuracy—ideal for serious precision setups.