Product Overview
The Vortex Optics Pro Extended Viper Cantilever Riflescopes Mount is designed to provide the correct height and forward placement for proper scope mounting on flat-top platforms. Crafted from durable aluminum, this mount ensures reliable and accurate optic retention.

Figure 1: Front view of the Vortex Optics Pro Extended Viper Cantilever Riflescope Mount.
Key features include:
- Provides correct height and forward placement for proper scope mounting.
- Positions the center of the riflescope tube at a height of 1.435” (36.45mm) from the base.
- Made with pride in the USA.
- Backed by an unlimited, unconditional, lifetime VIP Warranty.
Setup and Installation
Proper installation of your Vortex Cantilever Mount is crucial for optimal performance and accuracy. Follow these steps carefully:
- Prepare the Rifle: Ensure your rifle is unloaded and safe. Place it on a stable surface.
- Position the Mount: Place the cantilever mount onto the Picatinny or Weaver-style rail of your rifle. The cantilever design extends forward, allowing for proper eye relief with your riflescope.
- Secure Base Clamp Screws: Tighten the base clamp screws to a torque of 30 in/lbs. Use the included T-15 Wrench for this step. Ensure the mount is firmly seated on the rail and does not wobble.
- Mount the Riflescope: Carefully place your 1-inch riflescope into the rings of the cantilever mount. Ensure the riflescope is level and positioned for optimal eye relief.
- Secure Ring Screws: Tighten the ring screws evenly to a torque of 18 in/lbs. Alternate tightening diagonally to ensure even pressure and prevent damage to the scope tube. Do not overtighten.

Figure 2: Side view of the mount, showing the cantilever design.

Figure 3: Detailed dimensions of the 1-inch Cantilever Mount, indicating a tube height of 1.43 inches (36.45 mm).
Understanding Cantilever Mounts
For a comprehensive understanding of cantilever mounts and their various types, including the Pro Extended Cantilever Mount, please watch the official video below. This video explains the differences in quality, machining tolerance, and specific features like zero MOA or 20 MOA cant options.
Video 1: Vortex Optics Cantilever Mounts. This video provides an overview of different cantilever mount options and their applications.
Operation
Once installed, the Vortex Pro Extended Cantilever Mount securely holds your riflescope, providing a stable platform for accurate shooting. The extended design allows for optimal eye relief, especially on AR-style platforms, by positioning the scope further forward.
Regularly check the torque settings of both the base clamp screws and ring screws to ensure they remain at the recommended values (30 in/lbs for base, 18 in/lbs for rings) to maintain consistent performance.
Maintenance
To ensure the longevity and performance of your Vortex Cantilever Mount, follow these maintenance guidelines:
- Cleaning: Wipe down the mount with a clean, dry cloth after each use to remove dirt, dust, and moisture. For stubborn grime, a slightly damp cloth can be used, followed by immediate drying.
- Inspection: Periodically inspect the mount for any signs of wear, damage, or loose components. Pay close attention to the screws and the mounting surfaces.
- Lubrication: No lubrication is typically required for the mount itself. Avoid applying oils or greases to the mounting surfaces as this can affect friction and retention.
- Storage: Store the mount in a dry, temperature-controlled environment to prevent corrosion.
Troubleshooting
Most issues related to scope mounts are due to improper installation or loose components. If you experience problems, consider the following:
- Scope Movement/Loss of Zero:
- Check if the base clamp screws are tightened to 30 in/lbs.
- Verify that the ring screws are tightened evenly to 18 in/lbs.
- Ensure the scope tube is not slipping within the rings.
- Mount Not Seating Properly:
- Inspect the rifle's rail for any obstructions or damage.
- Ensure the mount's recoil lugs are properly engaged with the rail slots.
If issues persist after checking these points, contact Vortex Optics customer support for further assistance.
Specifications
| Feature | Detail |
|---|---|
| Brand | Vortex |
| Model Name | Pro Extended Cantilever Mount |
| Model Number | CVP-1 |
| Style | 1-inch |
| Color | Black |
| Material | Aluminum |
| Item Weight | 6.98 Ounces |
| Mounting Type | Cantilever Mount |
| Compatible Devices | Rifle |
| Scope Tube Height (from base) | 1.435” (36.45mm) |
| Base Clamp Screws Torque | 30 in/lbs |
| Ring Screws Torque | 18 in/lbs |
| Included Components | Cantilever mount, Hardware, T-15 Wrench |
Warranty and Support
Vortex Optics stands behind its products with an industry-leading warranty:
VIP Warranty:
- Unlimited, unconditional, lifetime warranty.
- Fully transferable promise to repair or replace your item if it becomes damaged or defective.
- Does not cover loss, theft, deliberate damage, or cosmetic damage that doesn't hinder performance.
For warranty claims, technical support, or any product-related inquiries, please visit the official Vortex Optics website or contact their customer service directly. You can also explore their brand store on Amazon for more products and information:





