Vortex Viper HD
VS
ATN Thor 4

VS

Vortex Viper HD
For hunters who want a balance of clarity, durability, and performance, the Vortex Viper HD 2-10x42 stands out. With a 2-10x magnification range, it excels in both close-quarter shots and mid-range targeting, making it ideal for a variety of hunting scenarios. The HD optical system provides outstanding color fidelity and sharpness, delivering clear images even in dim lighting—crucial for dawn and dusk hunts. Its precision turrets and side parallax adjustment allow for accurate, on-the-fly adjustments, while the rugged, shockproof construction holds up under tough conditions. Lightweight and built to withstand moisture and debris, the Viper HD is perfect for hunters seeking quality optics without excess weight.
ATN Thor 4
The ATN ThOR 4 Smart HD Thermal Hunting Scope represents a leap in thermal imaging technology, combining traditional optic design with advanced features for the modern hunter. Powered by the Obsidian IV Dual Core Processor, it delivers exceptional thermal sensitivity, improved resolution, and contrast for precise target detection in any environment. With a thermal zoom range from 1.25-5x to 4-40x, it adapts effortlessly to varying distances, while Black Hot, White Hot, and Color viewing modes enhance visibility. This scope is packed with smart features like a built-in Ballistics Calculator for accurate POI correction, recoil-activated video recording, and compatibility with Micro SD cards up to 64GB. The long-lasting power management system ensures 16+ hours of operation, while the 3" eye relief and multiple reticle options provide comfort and versatility. Accessories like the ATN ABL Laser Range Finder, Quick Detach Mount, and Battery Pack Kit expand functionality, making the ThOR 4 an invaluable tool for hunters and outdoor enthusiasts.
Basic Details
| Brand | Color | Style | Sport | Item Weight | Material | |
|---|---|---|---|---|---|---|
| Vortex Viper HD | Vortex | Black | VMR-3 (MOA) | Hunting | 1.4 Pounds | Aluminum |
| ATN Thor 4 | ATN | Black | 1-10x | Hunting | 1.9 Pounds | Aluminum |
Magnification & Range
| Magnification | Parallax Setting | |
|---|---|---|
| Vortex Viper HD | 3-15x | 100 yards |
| ATN Thor 4 | 1-5x | Adjustable |
Performance Insights
| Eye Relief | Zoom Ratio | FOV | Night Vision | |
|---|---|---|---|---|
| ATN Thor 4 | 3.5 inches | Variable | Variable | No |
To Calculate scope clicks: Let’s check out Scope Clicks Calculator
Diameter & Tube Size
| Tube Size | Tube Diameter | Objective Diameter | |
|---|---|---|---|
| Vortex Viper HD | 30mm | 30mm | 42mm |
| ATN Thor 4 | N/A (Digital thermal scope) | N/A | 50mm |
Compatibility
| Compatible Devices | Mounting Type | |
|---|---|---|
| Vortex Viper HD | Firearms | 30mm Picatinny or Weaver rails. |
| ATN Thor 4 | Rifle | Cantilever Mount |
Additional Features
| Reticle | Max Elevation Adjustment | |
|---|---|---|
| Vortex Viper HD | VMR-3 (MOA & MRAD) | 92 MOA |
| ATN Thor 4 | Smart Mil Dot | 90 MOA |
Built for Tough Conditions
| Waterproof | Fogproof | Shockproof | |
|---|---|---|---|
| ATN Thor 4 | Resistant to water splashes (not fully submersible) | Yes | Yes |
Accessories & Warranty
| Includes | Warranty | |
|---|---|---|
| Vortex Viper HD | Scope, Neoprene Cover, Sunshade, Lens Cloth, CR2032 Battery, Custom Turret Tool, RevStop Zero Ring | VIP Warranty, Lifetime |
| ATN Thor 4 | ThOR 4 HD Thermal Rifle Scope 1-10x, 640x480 with HD Video Recording, Wi-Fi, GPS, Smooth Zoom | 3 Year Manufacturer |



















