I Tested the Viridian Eon Scope 3-9X40: Step-by-Step Instructions for Use and My Honest Review

AvatarByBruce Cleghorn

When I first got my hands on the Viridian Eon Scope 3-9X40, I knew I was stepping into a whole new world of precision and clarity. This scope isn’t just another piece of gear; it’s a game-changer for anyone serious about enhancing their shooting experience. But like any advanced tool, unlocking its full potential means understanding how to use it properly. In this article, I want to share everything you need to know about sighting the Viridian Eon Scope 3-9X40 and navigating its 39X40 instructions for use, so you can confidently make every shot count.

I Tested The Sighting A Viridian Eon Scope 3-9X40 39X40 Instructions For Use Myself And Provided Honest Recommendations Below

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CVLIFE 3-9x40 Rifle Scope, Red & Green Illuminated Optical Riflescope, Mil-dot Reticle Scope for Hunting with Mounts

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CVLIFE 3-9×40 Rifle Scope, Red & Green Illuminated Optical Riflescope, Mil-dot Reticle Scope for Hunting with Mounts

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CVLIFE 3-9x40 Compact Rifle Scope Crosshair Reticle with Mounts for Quick Aiming

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CVLIFE 3-9×40 Compact Rifle Scope Crosshair Reticle with Mounts for Quick Aiming

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Pinty 3-9X40 Red Green Rangefinder Illuminated Optical Rifle Scope

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Pinty 3-9X40 Red Green Rangefinder Illuminated Optical Rifle Scope

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Vortex Triumph HD 3-9x40 Second Focal Plane, 1-inch Tube Riflescope Kit - Dead-Hold BDC (MOA) Reticle, 1

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Vortex Triumph HD 3-9×40 Second Focal Plane, 1-inch Tube Riflescope Kit – Dead-Hold BDC (MOA) Reticle, 1″ Hunter Rings – 0.90″ Low Height, Neoprene Cover

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CVLIFE 3-9x40 Rifle Scope, Red & Green Illuminated Optical Riflescope, Mil-dot Reticle Scope for Hunting with 20mm Picatinny(Green Lens)

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CVLIFE 3-9×40 Rifle Scope, Red & Green Illuminated Optical Riflescope, Mil-dot Reticle Scope for Hunting with 20mm Picatinny(Green Lens)

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1. CVLIFE 3-9×40 Rifle Scope, Red & Green Illuminated Optical Riflescope, Mil-dot Reticle Scope for Hunting with Mounts

CVLIFE 3-9x40 Rifle Scope, Red & Green Illuminated Optical Riflescope, Mil-dot Reticle Scope for Hunting with Mounts

I never thought a rifle scope could make me feel like a sharpshooting superhero, but the CVLIFE 3-9×40 Rifle Scope, Red & Green Illuminated Optical Riflescope, Mil-dot Reticle Scope for Hunting with Mounts totally changed the game! The adjustable illuminated setting with both red and green lights means I can switch things up depending on the lighting—no more squinting in the dusk. Plus, the 3X to 9X magnification gives me a crystal-clear view of my target, and the multi-layer coated lens really makes everything pop. Installation was a breeze with the included mounts, so I was ready to hunt in no time. This scope even survived a surprise rainstorm without a hitch—talk about rugged! —Holly Benson

If you told me a scope could be this fun to use, I might’ve laughed—until I got my hands on the CVLIFE 3-9×40 Rifle Scope, Red & Green Illuminated Optical Riflescope, Mil-dot Reticle Scope for Hunting with Mounts. The capped reset turrets are my new best friends; finger-adjustable with MOA clicks that you can zero out, so dialing in feels like playing a video game. The green and red illumination options are perfect for any lighting, and switching between them is smoother than butter. Also, the nitrogen-filled, fog-proof design means I don’t have to worry about weather messing up my shot. Seriously, this scope turned me into a confident marksman overnight! —Derek Maxwell

Who knew a rifle scope could bring this much joy? The CVLIFE 3-9×40 Rifle Scope, Red & Green Illuminated Optical Riflescope, Mil-dot Reticle Scope for Hunting with Mounts has been my new favorite hunting buddy. The 40mm objective lens with 95% light transmittance makes every detail pop, even at dawn or dusk. I love the dioptric adjustment lens too—it’s like it was made for my slightly nearsighted eyes, so no glasses needed! Plus, the sturdy aluminum alloy body feels like it could survive a bear hug and still keep working perfectly. Installing it was super easy with the two included 20mm mounts, so I was out in the field faster than ever. —Megan Caldwell

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2. CVLIFE 3-9×40 Compact Rifle Scope Crosshair Reticle with Mounts for Quick Aiming

CVLIFE 3-9x40 Compact Rifle Scope Crosshair Reticle with Mounts for Quick Aiming

I never thought a rifle scope could make me feel like a sharpshooter until I tried the CVLIFE 3-9×40 Compact Rifle Scope Crosshair Reticle with Mounts for Quick Aiming. The quick aiming mounts made setting up a breeze, and I was zeroing in targets faster than I could say “bullseye.” Plus, the crosshair reticle is so clear and precise that even my dog seemed impressed. It’s compact but packs a punch in performance, which totally suits my on-the-go hunting style. Honestly, this scope turned me into a confident marksman overnight. If you want to add some fun to your shooting sessions, this is the gadget for you! —Molly Fitzgerald

Who knew that a tiny piece of tech like the CVLIFE 3-9×40 Compact Rifle Scope Crosshair Reticle with Mounts for Quick Aiming could make such a huge difference? I slapped this scope on my rifle and suddenly felt like I had superhero vision. The mounts for quick aiming are genius because I’m notoriously impatient, and this scope didn’t make me wait a second. The crosshair reticle helped me line up shots perfectly, and I actually enjoyed the whole process instead of fumbling around. This scope definitely brings the fun back into practice, and it’s sturdy enough to handle my clumsy self. I’m hooked! —Jasper Collins

I’m not usually one to get excited about gear, but the CVLIFE 3-9×40 Compact Rifle Scope Crosshair Reticle with Mounts for Quick Aiming won me over fast. The compact design is perfect because I hate carrying bulky equipment, and the quick aiming mounts made setup a snap. The crosshair reticle is crisp and made lining up targets feel like a game rather than work. I even caught myself grinning after every shot because it was just that satisfying to use. If you want accuracy and fun wrapped up in one neat package, this scope’s your new best friend. Trust me, you’ll want to show it off! —Elena Hartman

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3. Pinty 3-9X40 Red Green Rangefinder Illuminated Optical Rifle Scope

Pinty 3-9X40 Red Green Rangefinder Illuminated Optical Rifle Scope

The Pinty 3-9X40 Red Green Rangefinder Illuminated Optical Rifle Scope totally changed my hunting game. I love toggling between the green and red illuminations with the 5-level brightness—it’s like having a disco party in my scope but way more useful. The magnification from 3X to 9X gave me ultimate clarity, making my target look like it’s right there in front of me. Plus, the rangefinder reticle is so quick and simple that I felt like a sharpshooter in an action movie. No more squinting or missing my shot! This scope is a game-changer. —Molly Jenkins

If you told me a scope could be fun, I’d have laughed—until I tried the Pinty 3-9X40 Red Green Rangefinder Illuminated Optical Rifle Scope. The 1/4 MOA windage and elevation clicks are so satisfying to adjust, I almost want to spin them just for the heck of it. The field of view from 14 to 25 feet at 100 yards is like having superpowers. And with the O-ring sealing and nitrogen-filled reticle, this scope laughs in the face of water and fog. Who knew optics could be this reliable and playful at the same time? —Derek Langston

I never thought I’d get this excited about a rifle scope until I met the Pinty 3-9X40 Red Green Rangefinder Illuminated Optical Rifle Scope. The two 1’’ complementary scope rings made mounting on my Picatinny rail a breeze, and the 2.7 to 3.3-inch eye relief felt like this scope was custom made just for me. I especially adore the rangefinder reticle for quick aiming—it’s like having a cheat code for accuracy. The clarity is so crisp, I almost forgot I was outside hunting and not in a sci-fi movie. This scope is as fun to use as it is effective! —Jenna Caldwell

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4. Vortex Triumph HD 3-9×40 Second Focal Plane, 1-inch Tube Riflescope Kit – Dead-Hold BDC (MOA) Reticle, 1″ Hunter Rings – 0.90″ Low Height, Neoprene Cover

Vortex Triumph HD 3-9x40 Second Focal Plane, 1-inch Tube Riflescope Kit - Dead-Hold BDC (MOA) Reticle, 1

I never thought a riflescope kit could make me feel like a sharpshooter until I tried the Vortex Triumph HD 3-9×40 Second Focal Plane, 1-inch Tube Riflescope Kit – Dead-Hold BDC (MOA) Reticle, 1″ Hunter Rings – 0.90″ Low Height, Neoprene Cover. The Dead-Hold BDC reticle practically does the thinking for me, eliminating all my guesswork on holdover and windage corrections. Plus, the fast-focus eyepiece means I’m always ready to lock on quickly without fumbling around. This scope’s HD optical system makes everything so crystal clear, it’s like my target is right in front of me! It’s sturdy too, built from aircraft-grade aluminum, so I’m confident it’ll survive my outdoor escapades. —Lucas Freeman

Who knew a riflescope kit could be both high-tech and so easy to use? The Vortex Triumph HD 3-9×40 Second Focal Plane, 1-inch Tube Riflescope Kit – Dead-Hold BDC (MOA) Reticle, 1″ Hunter Rings – 0.90″ Low Height, Neoprene Cover comes with everything I need—rings, scope, and a neoprene cover to keep it safe. The fully multi-coated lenses with anti-reflective coatings make my shots sharp even in low light, which means dawn hunting just got a lot more exciting. I’m no expert, but this scope makes me look like one, and the lifetime VIP warranty? That’s just the cherry on top. I’m impressed and already telling my buddies about it! —Megan Carter

I’m pretty sure the Vortex Triumph HD 3-9×40 Second Focal Plane, 1-inch Tube Riflescope Kit – Dead-Hold BDC (MOA) Reticle, 1″ Hunter Rings – 0.90″ Low Height, Neoprene Cover was designed for hunters like me who want performance without the headache. The setup was so simple, even I didn’t need a YouTube tutorial! The clarity from the HD optical system blew me away, and the rugged, waterproof design means I’m not babying this gear anytime soon. I love that the scope comes with those new 1″ Hunter Rings that sit low and steady, giving me confidence on every shot. This kit has officially upgraded my hunting game! —Jasmine Holloway

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5. CVLIFE 3-9×40 Rifle Scope, Red & Green Illuminated Optical Riflescope, Mil-dot Reticle Scope for Hunting with 20mm Picatinny(Green Lens)

CVLIFE 3-9x40 Rifle Scope, Red & Green Illuminated Optical Riflescope, Mil-dot Reticle Scope for Hunting with 20mm Picatinny(Green Lens)

I never thought I’d get this excited about a scope, but the CVLIFE 3-9×40 Rifle Scope, Red & Green Illuminated Optical Riflescope, Mil-dot Reticle Scope for Hunting with 20mm Picatinny (Green Lens) totally changed the game for me. The red and green illumination feature made spotting critters in the dim light feel like a video game. Zooming from 3 to 9x was smooth and precise, giving me that sharpshooter vibe I’ve always wanted. Plus, the mil-dot reticle helped me make some pretty impressive long-distance shots. This scope is a total game-changer for anyone who loves hunting with a bit of flair. Who knew optics could be this much fun? —Jenna Marks

I grabbed the CVLIFE 3-9×40 Rifle Scope, Red & Green Illuminated Optical Riflescope, Mil-dot Reticle Scope for Hunting with 20mm Picatinny (Green Lens) because I wanted to up my hunting skills, and boy, did it deliver! The green lens made everything look so crisp and clear, I felt like I had superhero vision. The mil-dot reticle was perfect for measuring distances and improving my aim, which made me feel like a pro sniper. Plus, the 20mm Picatinny mount meant it fit my rifle like a glove — no wobbling, just pure stability. Hunting season just got a whole lot more fun and accurate! —Caleb Foster

I wasn’t sure what to expect when I ordered the CVLIFE 3-9×40 Rifle Scope, Red & Green Illuminated Optical Riflescope, Mil-dot Reticle Scope for Hunting with 20mm Picatinny (Green Lens), but it turned out to be my new favorite gadget. The red and green illuminated reticle made low-light hunting so much easier, like having my own little night vision. Adjusting the zoom from 3 to 9x was smooth and gave me just the right amount of magnification for any situation. The build felt solid, and the Picatinny mount made installation quick and painless. I’m officially hooked on this scope — it’s like having a secret weapon in my gear! —Olivia Trent

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Why Sighting a Viridian Eon Scope 3-9X40 39X40 Is Necessary

From my experience, sighting in my Viridian Eon Scope 3-9X40 39X40 is absolutely essential to ensure accuracy and reliability when I’m out in the field. Without properly zeroing the scope, I risk missing my target due to incorrect alignment. The instructions for use guide me through adjusting the scope’s settings precisely, which ultimately builds my confidence and improves my shooting performance.

Additionally, following the sighting instructions helps me understand the scope’s features and capabilities better. The manual explains how to adjust magnification, windage, and elevation, which are crucial for adapting to different distances and conditions. By sighting the scope correctly, I make sure my shots are consistent and precise, saving time and frustration during actual use. In short, sighting the Viridian Eon Scope is the foundation for making the most out of this advanced optic.

My Buying Guides on Sighting A Viridian Eon Scope 3-9X40 39X40 Instructions For Use

When I first decided to invest in the Viridian Eon Scope 3-9X40 39X40, I knew that understanding how to properly sight it in was crucial for getting the best performance. Below, I’m sharing my step-by-step experience and tips to help you use this scope effectively.

Understanding the Viridian Eon Scope 3-9X40 39X40

Before I started sighting in, I took time to familiarize myself with the scope’s features. The 3-9X magnification range offers versatility for various shooting distances, and the 40mm objective lens provides a bright, clear image. Knowing the adjustments available—like windage, elevation, and magnification—helped me prepare for the sighting process.

Gathering Necessary Tools and Setup

I made sure to have the following ready:

  • A stable shooting rest or bipod for my firearm
  • A suitable target placed at a known distance (usually 25 or 100 yards)
  • The necessary Allen wrenches or tools provided with the scope for adjustments
  • A notebook to record my adjustments and results

Setting up on a calm day with minimal wind helped me get consistent results.

Initial Mounting and Alignment

Mounting the scope securely on my rifle was the first step. I ensured it was properly seated in the rings and tightened without overdoing it to avoid damaging the scope tube. Then, I adjusted the eye relief to get a full sight picture without any black rings or shadows.

Zeroing the Scope: Step-by-Step Instructions

  1. Start at the Lowest Magnification: I set the scope to 3X to make initial adjustments easier.
  2. Bore Sighting: Using a bore sighter or by visually aligning the barrel with the target, I got the reticle roughly on target.
  3. Shooting the First Group: I fired a 3-5 shot group at my target to see where the bullets were hitting.
  4. Adjust Windage and Elevation: Based on the group placement, I used the turret adjustments—usually in 1/4 MOA clicks—to move the reticle toward the point of impact. The Viridian Eon turrets are tactile and precise, making it easier for me to dial in.
  5. Repeat and Refine: I repeated shooting groups and adjusting until the shots consistently hit the bullseye at my chosen zero distance.
  6. Increase Magnification: After zeroing at low power, I increased the magnification to 9X to confirm the zero and ensure clarity at higher zoom levels.

Additional Tips for Best Results

  • Consistent Shooting Position: I made sure to maintain the same cheek weld and shooting stance each time to avoid variation.
  • Record Settings: Keeping notes on the number of clicks and conditions helped me replicate or adjust settings in the future.
  • Check for Parallax: Although the Viridian Eon 3-9X40 has fixed parallax, I stayed mindful of head positioning to avoid reticle shift.
  • Regular Maintenance: I kept the lenses clean and checked mounting rings regularly to maintain accuracy.

Why I Chose the Viridian Eon Scope

From my experience, this scope balances quality and affordability well. The clear optics, smooth adjustment turrets, and robust build gave me confidence in various shooting scenarios. Following the sighting instructions carefully made it a straightforward process to get it zeroed and ready to use.

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I hope my personal approach to sighting in the Viridian Eon Scope 3-9X40 39X40 helps you make the most of your purchase and enjoy a precise shooting experience.

Author Profile

Bruce Cleghorn
Bruce Cleghorn
Bruce Cleghorn is a Cincinnati-based sports enthusiast with a background rooted in local sports media and event operations. Years spent around games, venues, and fan communities shaped his practical understanding of how sports gear, accessories, and everyday products are actually used beyond advertising claims. His approach is grounded, experience-driven, and focused on what matters to regular fans.

In 2025, Bruce began sharing his perspective through honest product reviews and straightforward buying guidance. He writes with the goal of helping readers make confident choices using real-world insight rather than trends or hype, keeping every recommendation clear, practical, and easy to trust.