---
product_id: 442058347
title: "Dual Ring Scope Mount Cantilever Mount, 30mm / 1 inch Scope Ring QD Mount Base for 20mm Rail"
brand: "billion duo"
price: "€ 40.49"
currency: EUR
in_stock: true
reviews_count: 8
category: "Billion Duo"
url: https://www.desertcart.be/products/442058347-dual-ring-scope-mount-cantilever-mount-30mm-1-inch-scope
store_origin: BE
region: Belgium
---

# Dual ring design for secure mounting Fits both 30mm & 1 inch scope rings Quick detach (QD) base for 20mm rails Dual Ring Scope Mount Cantilever Mount, 30mm / 1 inch Scope Ring QD Mount Base for 20mm Rail

**Brand:** billion duo
**Price:** € 40.49
**Availability:** ✅ In Stock

## Summary

> 🎯 Elevate your aim with rock-solid precision and effortless adaptability!

## Quick Answers

- **What is this?** Dual Ring Scope Mount Cantilever Mount, 30mm / 1 inch Scope Ring QD Mount Base for 20mm Rail by billion duo
- **How much does it cost?** € 40.49 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/442058347-dual-ring-scope-mount-cantilever-mount-30mm-1-inch-scope)

## Best For

- billion duo enthusiasts

## Why This Product

- Trusted billion duo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Universal Compatibility:** Seamlessly fits 30mm or 1-inch scope rings for versatile setups.
- • **Quick Detach Convenience:** Switch scopes or accessories in seconds with the QD mount base.
- • **Compact Cantilever Design:** Optimized 134mm length for perfect eye relief and balance.
- • **Aircraft-Grade Aluminum Build:** Lightweight yet rugged durability designed for professional use.
- • **Precision Dual Ring Stability:** Lock your optics with unmatched steadiness and zero wobble.

## Overview

The Dual Ring Scope Mount Cantilever Mount by BILLION DUO offers a durable, aircraft-grade aluminum construction designed to securely hold 30mm or 1-inch scope rings on 20mm rails. Featuring a quick detach base and a compact 134mm length, it ensures stable, versatile mounting ideal for professional optics setups.

## Description

Dual scope light mount Adapter for picatinny, weaver rails. Fit for Scope rings 1 Inch 2 4mm or 30mm. Fits for 20mm Picatinny Wearver rails. Ring Width 25mm. Ring Inner Size 30mm without insert. Ring Inner Diameter with Insert 2 4mm. Durable aircraft grade aluminum construction. Length between two ring 44mm. Overall Length 134mm. *NOTE Before buying, please read the picture size carefully and order according to your own equipment.

Review: Very well made. - Perfect for my scope I can now add night vision if wanted.
Review: Spot on. - Fitted to my Ruger precision 17HMR with Bushnell scope. 1moa grouping at 100m faultlessly.

## Features

- Dual scope light mount Adapter for rails. Fit for Scope rings 1 Inch (25.4mm) or 30mm.
- Fits for 20mm rails.
- Ring Width: 25mm. Ring Inner Size: 30mm (without insert). Ring Inner Diameter (with Insert): 25.4mm.
- Durable aircraft grade aluminum construction.
- Length between two ring: 44mm. Overall Length: 134mm. *NOTE：Before buying, please read the picture size carefully and order according to your own equipment.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Asin | B09VFB3S3S |
| Brand | BILLION DUO |
| Customer Reviews | 4.4 4.4 out of 5 stars (31) 4.4 out of 5 stars |
| Date First Available | 10 Feb. 2022 |
| Guaranteed Software Updates Until | unknown |
| Manufacturer | BILLION DUO |
| Package Dimensions | 19.2 x 10.4 x 6.8 cm; 270 g |
| Shape | LD-3002-K |

## Images

![Dual Ring Scope Mount Cantilever Mount, 30mm / 1 inch Scope Ring QD Mount Base for 20mm Rail - Image 1](https://m.media-amazon.com/images/I/51XB7xMdqXL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very well made.
*by S***E on 22 August 2026*

Perfect for my scope I can now add night vision if wanted.

### ⭐⭐⭐⭐⭐ Spot on.
*by A***R on 4 July 2026*

Fitted to my Ruger precision 17HMR with Bushnell scope. 1moa grouping at 100m faultlessly.

### ⭐⭐⭐⭐⭐ Perfect for PCP
*by V***S on 8 December 2023*

Awesome, I have set this up on my PCP bullpup rifle and not only keeps it's zero (subject to having a decent scope) but I have took it off several times and every time it's bang on. I have the same bullpup in 2 different calibres too and use it on either at any 1 time. Obviously adjusting scope hold overs as they differ on each, with the vertical aim point bang on.

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**Shop now:** [https://www.desertcart.be/products/442058347-dual-ring-scope-mount-cantilever-mount-30mm-1-inch-scope](https://www.desertcart.be/products/442058347-dual-ring-scope-mount-cantilever-mount-30mm-1-inch-scope)

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-08-27*