5 Best Stoeger STR-9S Red Dot Sights

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Welcome to my Best Stoeger STR-9S Red Dot Sights Review In 2023.

After much rigorous field testing, one particular combo, the Stoeger STR-9S paired with the HOLOSUN HS507K-X2 red dot sight, stood head and shoulders above the rest. It’s my top pick – hands down! 

In this article, we’ll navigate the world of red dot sights specifically tailored for the Stoeger STR-9S. I’ll be sharing my insights and recommendations based on hands-on reviews. So whether you’re a greenhorn looking to gear up or a sharpshooter eyeing an upgrade, stick around!

How to mount red dot sights on Stoeger STR-9S?

The mounting process may require a special adapter plate or even a bit of modification by a skilled gunsmith like milling. 

Top 5 Best Stoeger STR-9S Red Dot Sight

1. HOLOSUN HS507K-X2 – My Top Choice

The HOLOSUN HS507K-X2 is a compact, lightweight red dot sight designed for precision shooting.

Multiple Reticle System: Boasting a multiple reticle system, it allows users to switch between a 2 MOA dot, a 32 MOA circle, or a combination of both. This flexibility enhances target acquisition, providing versatility across different shooting scenarios.

Window Size: With a window size measuring 0.58″ X 0.77″, this sight ensures a clear and uninterrupted sight picture. Though small, the window doesn’t compromise on performance, enabling quick and easy target acquisition.

Impressive Battery Life: Running on a single CR2032 battery, this little beast packs a whopping 50,000-hour battery life. Plus, it features easy side battery access, eliminating the need to unmount the sight when changing batteries.

Robust Housing Construction: Crafted from 7075 aluminum, the HS507K-X2 boasts a highly durable housing. Its lens frame features straight cuts and rounded corners designed to withstand physical impact, ensuring its longevity.

Compact and Lightweight Design: At just 28 grams with the battery included, the HOLOSUN HS507K-X2 remains impressively lightweight without compromising on functionality and robustness.

Why I love it: I’m a sucker for gear that offers excellent functionality in a compact package. With its lightweight design, impressive battery life, and flexible reticle system, the HOLOSUN HS507K-X2 checks all the boxes for me.

My Experience 

On the field, the HS507K-X2 delivered brilliantly. Its compact design complimented my Stoeger STR-9S perfectly, allowing for quick, precise shots. Its sight picture remained crisp and clear even in varied lighting conditions, a testament to its quality and performance.


  • Crisp sight picture
  • Long battery life
  • Easy side battery access
  • Fits in holsters easily
  • Replaces rear sight


  • Difficulty in shooting with both eyes open

Review of Holosun 507k X2

2. HOLOSUN HS407C-X2 – Rapid Target Acquisition

The HOLOSUN HS407C-X2 is a cutting-edge, compact reflex sight equipped with state-of-the-art technology for rapid target acquisition.

2 MOA Dot Reticle: This sight sports a crisp and clear 2 MOA dot reticle, which I found to be very efficient for precision targeting. This small, bright dot grants accuracy for both long-distance shooting and rapid close-range engagements.

Shockproof Design: The HS407C-X2 is built like a tank, ruggedly designed to withstand any impact. I’ve bumped it, dropped it, and it’s held up without a hitch. This shockproof feature certainly adds to its dependability, especially in rough terrains or unexpected conditions.

Window Size: Measuring at 0.63 in x 0.91 in, the window size of this sight is more than adequate. It provides a wide field of view that enables quick and easy target spotting. The broader the window, the quicker the dot comes into your line of sight, making it a breeze to acquire targets swiftly.

Unlimited Eye Relief: The HS407C-X2 boasts unlimited eye relief, ensuring quick target acquisition without worrying about the sight’s position relative to your eye. With this feature, I’ve experienced less eye strain, which is a significant advantage during long shooting sessions.

Long Battery Life: One of the selling points of this sight is its battery life that stretches up to 50,000 hours. For someone like me who spends long hours at the range, this long battery life is a boon.

Why I Love it: The HS407C-X2 marries durability, accuracy, and ease-of-use perfectly. Its resilience in various conditions, paired with the precise 2 MOA dot reticle and the convenience of the unlimited eye relief, make it a sight to fall in love with.

My Experience 

Mounting this sight on my Stoeger STR-9S was a game-changer. It proved to be a perfect partner, complementing the accuracy and performance. The sight held zero impeccably even after several rounds and made target acquisition fast and intuitive.


  • Robust shockproof design.
  • Crisp 2 MOA dot reticle.
  • Generous window size.
  • Unlimited eye relief for comfort.
  • Long battery life for extended usage.


  • Adjustment knobs can be a bit stiff, requiring some getting used to.

3. Truglo Tru-Tec – Budget Friendly

The Truglo Tru-Tec is a budget-friendly, high-performance red dot sight offering fast target acquisition and maximum compatibility.

3-MOA Red Dot Reticle: The Tru-Tec sports a bright 3-MOA red dot reticle that facilitates quick target acquisition. It’s particularly useful when you need to shoot quickly or at moving targets, offering a balance between speed and accuracy that I really appreciated.

Multi-Coated Objective Lens: The 23mm x 17mm multi-coated objective lens delivers a clear and bright view, even in less-than-ideal lighting conditions. It’s great for maintaining visibility, and the lens coating also helped minimize any potential glare or reflections that could disrupt my aim.

Digital Push-Button Brightness Controls: I found the digital push-button brightness controls to be particularly useful. The sight offers 10 brightness settings, enabling you to adjust based on the ambient lighting conditions. I found this feature pretty handy, especially when transitioning between different environments.

CNC-Machined Aircraft-Grade Aluminum: Tru-Tec’s construction, CNC-machined from aircraft-grade aluminum, gives it an advantage in terms of durability and lightness. 

Why I Love It: The Tru-Tec strikes a fantastic balance between price and performance. Its quick target acquisition, coupled with easy brightness controls and wide compatibility, make it a great pick, especially for those on a budget.

My Experience 

When I mounted the Tru-Tec on my Stoeger STR-9S, I noticed an immediate improvement in my shooting speed and accuracy. It’s an excellent pairing that complements the Stoeger’s inherent robustness and reliability, enhancing my shooting experience significantly.


  • Fast target acquisition with 3-MOA red dot.
  • Versatile brightness control options.
  • Lightweight yet durable construction.
  • Water-resistant design.


  • The finish could be improved to increase aesthetic appeal.

4. Vortex Viper – Good Value for Money

The Vortex Viper Red Dot Sight is a durable, easy-to-use sight that offers excellent value for money, featuring a super low-profile design ideal for handguns with cut-out slides.

Super Low-Profile Design: The Viper’s super low-profile design is a distinct feature. It’s especially suitable for handguns with cut-out slides, making it a great match for the Stoeger STR-9S. This low-profile design doesn’t obstruct your vision, which I found quite helpful in fast-paced shooting scenarios.

Co-Witnessing Capability: One of the Viper’s unique features is its co-witnessing capability with iron sights. The 6 MOA dot is easily noticeable and helps get on target swiftly. This feature adds a layer of flexibility, allowing you to shift between the red dot and iron sights seamlessly.

Power and Illumination Controls: The sight’s power and illumination controls are user-friendly, making adjustments on the fly a breeze. It doesn’t matter whether you’re dialing down the brightness in low-light conditions or cranking it up in broad daylight, the Viper’s got you covered.

Fully Multi-Coated Lens with Armortek Coatings: The Viper’s fully multi-coated, ultra-clear lens provides an unobstructed field of view. Furthermore, the Armortek coatings safeguard the lens from oil, dirt, and scratches, ensuring it remains in top condition even with rough use.

Durable Construction: Its hard-anodized finish, waterproof, and shockproof construction assures you that the Viper Red Dot is ready for all conditions. The O-ring seals prevent moisture, dust, and debris from penetrating the sight, promising reliable performance in all environments.

Why I Love It: The Vortex Viper delivers a great bang for your buck. Its low-profile design, easy-to-use controls, and durable construction make it a sight that punches above its weight class.

My Experience 

Using the Viper on my Stoeger STR-9S was a joy. The sight’s easy adjustments, clear visuals, and rapid target acquisition complemented the STR-9S’s powerful performance, enhancing my overall shooting experience.


  • Super low-profile design for unobstructed sight.
  • User-friendly power and illumination controls.
  • Durable, multi-coated lens with protective coatings.
  • Hard anodized finish for durability.
  • Waterproof and shockproof construction.


  • 6 MOA dot may be too large for precision long-range shooting.
  • Windage and elevation adjustments might take some time to get used to.

5. Vortex Venom – Highly Durable Red Dot Sight

The Vortex Venom Red Dot Sight is a highly durable sight with a solid aluminum housing, promoting rapid target acquisition and easy power adjustments.

Rapid Target Acquisition: This sight is a master at rapid target acquisition thanks to the 3 MOA dot. The size and intensity of the dot ensure you can get your shots down range quickly and accurately, a feature I found particularly useful during my field testing.

Aluminum Housing: The Venom’s robust aluminum housing guarantees it can withstand some heavy-duty usage. The sight took quite a beating during my tests, and I’m pleased to report it stood up to the challenge admirably.

Wide Field of View: The multi-coated lenses offer a clean, wide field of view. This feature is a real game-changer when shooting in the open field, as it allows you to keep a broader perspective on your surroundings.

Convenient Controls: The power and dot intensity controls, conveniently located on the side, make it easy to toggle between the 10 brightness levels. The option to choose the ideal brightness depending on the ambient light greatly enhanced my shooting experience.

Top Load System: The top load system makes changing the CR1632 battery incredibly straightforward. This design means you don’t need to remove your sight to swap out the power source, saving you valuable time in the field.

Why I Love It: What I love about the Vortex Venom is its robustness paired with simplicity. Its tough construction, combined with easy-to-use controls and excellent target acquisition, make it a sight worth considering.

My Experience 

I had an excellent time using the Vortex Venom on my Stoeger STR-9S. It’s an asset when it comes to rapid target acquisition and the wide field of view lets me keep track of the surroundings effortlessly. The durability, combined with the convenience of power controls and battery replacement, enhanced my overall shooting experience.


  • Fast target acquisition with a 3 MOA dot.
  • Solid, durable aluminum housing.
  • Wide field of view for better situational awareness.
  • Convenient power and dot intensity controls.
  • Straightforward top load system for easy battery replacement.


  • Finding a replacement for the CR-1632 battery can be a hassle.
  • Auto-brightness mode may not always match your personal preference.

Final Verdict

After an extensive journey into the land of sights, it’s clear that the winner of the race is the HOLOSUN HS507K-X2, taking the crown as my top choice for the Stoeger STR-9S. 

The other contenders, the HOLOSUN – HS407C-X2, Truglo Tru-Tec, Vortex Viper, and Vortex Venom, all bring something unique to the table and have their own strengths and quirks. 

Ultimately, choosing the right sight boils down to personal preferences, shooting needs, and, of course, budget. Rest assured, no matter which sight you choose from this list, your Stoeger STR-9S will be a force to be reckoned with!


Can you put a red dot on a Stoeger STR9?

Absolutely, you can mount a red dot on a Stoeger STR-9 with the help of a suitable adapter plate or professional modification.

Can you put a sight on a Stoeger str-9?

Yes, you can certainly equip a Stoeger STR-9 with a sight, enhancing your shooting accuracy and speed.

Is the Stoeger STR-9 optics Ready?

Yes, the Stoeger STR-9 does have an optics-ready version that allows for the mounting of red dot sights.

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I'm Micheal, an avid shooter and hunting enthusiast from Texas. I'm a recreational shooter who loves to spend time at the range and enjoy learning about new firearms and gears. I love to write about guns and share my passion for shooting with others.

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