Master Precision: Best Red Dot Sight for Marlin 45-70 Unleashed!

Our Top Picks

Best Overall

Aimpoint Patrol Rifle Optic red dot for marlin 45-70

Aimpoint Patrol Rifle Optic

The pinnacle of red dot sights

  • Value: 9/10
  • Performance: 9/10
  • Cost: 8.5/10
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Best Budget

Sig Romeo5 Red Dot for marlin 45-70

Sig Romeo5 Red Dot

Offers superior reliability without breaking the bank.

  • Value: 9/10
  • Performance: 7.5/10
  • Cost: 8.5/10
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Best Holographic Sight

EOTech EXPS2 Red Dot for marlin 45-70


Guarantees quick target acquisition and increased accuracy.

  • Value: 8/10
  • Performance: 9/10
  • Cost: 8/10
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Welcome to the ultimate guide for all Marlin 45-70 enthusiasts seeking unmatched precision! If you’re searching for the perfect red dot sight to unlock your rifle’s true potential, you’ve landed in the right place. In this article, we’ll delve into the world of top-notch optics, revealing the best red dot sight options specially tailored for the Marlin 45-70.

Understanding the Marlin 45-70

Marlin 45-70
Image from Ozzie Reviews

The Marlin 45-70 is a legendary rifle that has stood the test of time. Known for its power and versatility, it has become a favorite among hunters and firearm enthusiasts alike. Chambered in the iconic .45-70 Government cartridge, this lever-action rifle packs a punch, making it suitable for big-game hunting and long-range shooting.

With its robust construction and smooth action, the Marlin 45-70 offers exceptional reliability and accuracy. Its lever-action mechanism provides quick follow-up shots, making it well-suited for hunting scenarios where speed and precision are crucial. The rifle’s classic design and ergonomic features ensure a comfortable shooting experience, even during extended sessions in the field.

Whether you’re a seasoned shooter or a novice looking to explore the world of firearms, the Marlin 45-70 is a dependable companion that offers power, accuracy and a touch of nostalgia. Understanding its features and capabilities is essential for maximizing your shooting performance and selecting the best red dot sight to complement this iconic rifle.

Features to Consider When Choosing the Best Red Dot Sight for Marlin 45-70

FeaturesAimpoint PROSig Romeo5EOTech EXPS2Trijicon RMRHolosun 403BBushnell Trophy TRS-25Category Average
Overall Score3.474.
Build Quality43.54.53.643.33.82

When it comes to equipping your Marlin 45-70 with a red dot sight, making the right choice can significantly impact your shooting performance. So let us guide you through the factors that will enhance your shooting experience and accuracy.


Excellent optics allow you to see your target clearly, no matter if you’re aiming under the bright sun or in low light. You want a red dot that brings your target into sharp relief, with colors that pop and details that stand out, making it easier to hit your mark every time.

How do we rate it?

We rate the clarity, brightness, dot crispness, and field of view on a scale from 1 to 5. A higher score means the optics provide crystal-clear images under various lighting conditions, have minimal distortion, and offer a wide field of view.

Build Quality

Sig Romeo5 vs Holosun 403b

As we said, the Marlin 45-70 packs a punch, and your red dot sight must withstand its substantial recoil. So it’s important to choose a sight built with durability in mind, featuring robust construction materials and a shockproof design. Get a sight that stays on target, shot after shot.

How do we rate it?

We assess the durability, material quality, and weather resistance. A higher score indicates a red dot that feels solid, is made from high-grade materials, and can confidently withstand harsh conditions and rough handling.


Battery life plays a crucial role in your red dot’s reliability. Select a sight with long-lasting batteries or energy-saving features to ensure your sight remains operational during extended shooting sessions. Get a red dot sight that’s powered up when it matters the most.

How do we rate it?

We consider how long the battery lasts under typical use. A score of 5 means that the red dot offers an exceptionally long battery life. We also consider if the compartment offers convenient battery changes and if the battery is easily available on the market.


Different shooting environments require adjustable brightness settings to maintain a clear and visible reticle. So choose a red dot sight that offers versatile brightness adjustment, allowing you to adapt to various light conditions. A sight with multiple brightness levels and night vision compatibility will give you the advantage in the field and at the range.

How do we rate it?

We evaluate the brightness levels, daylight visibility, and reticle clarity. A score of 5 means excellent visibility in both bright sunlight and low light conditions, and a reticle that remains sharp and defined.


The Marlin 45-70 demands a secure and stable mounting solution for your red dot sight. So it’ll be advantageous if your optic is compatible with various mounting options, such as Picatinny or Weaver rails, and is of course compatible with your rifle. Proper mounting will ensure your sight stays firmly in place for consistent accuracy.

How do we rate it?

This involves the design’s comfort, ease of use, and adjustability. In this aspect, a higher score means the red dot is comfortable to use for extended periods, controls are intuitively placed, and adjustments can be made easily and accurately.


A red dot that’s easy on the wallet but skimps on important stuff like clarity or durability? That’s a no-go. But one that’s priced a bit higher yet packs in all the features you need—crisp optics, solid build, long battery life, and user-friendly design—that’s hitting the jackpot. We want you to score a reliable, high-performing red dot without blowing your budget.

How do we rate it?

We assess the overall worth, taking into account the price compared to the features and performance offered. A higher score indicates a red dot that offers an excellent balance of quality features at a price that represents good value for money.

6 Best Red Dot Sights for Marlin 45-70

Best Overall: Aimpoint Patrol Rifle Optic

FactorAimpoint PROCategory Average
Build Quality43.82

Score: 3.47/5

Quick Specs:

  • Reticle: 2 MOA
  • Weight: 7.8 oz
  • Dimensions: 4.8 x 1.9 x 1.9 inches
  • Battery: 30,000 hrs

As the pinnacle of red dot sights, the Aimpoint Patrol Rifle Optic (PRO) is built like a tank, with a rugged housing that can withstand the harshest conditions, making it the go-to choice for professionals and serious shooters alike. 

The PRO features a clear and crisp 2 MOA red dot reticle, allowing for quick target acquisition and precise aiming. The optics are parallax-free, eliminating any aiming errors caused by eye position. It offers easy-to-use and intuitive controls, allowing for quick adjustments to the brightness settings. It has a simple on/off knob and offers 10 brightness levels, including compatibility with night vision devices. 


  • Long battery life
  • Waterproof, shockproof, fog proof
  • Durable construction
  • Excellent optics


  • Slightly heavier than other red dots in its class
  • Expensive

What Customers Say

This is a marvelous red dot scope that provides exceptional shooting performance on the range. It is ultra-high quality and easy to sight in and use.


The solid feel, the evident attention to fine details in the manufacture of this reflex gun sight; it all adds up to a product I really appreciate!

Michael J. Shannon

Best Budget: Sig Romeo5 Red Dot

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FactorSig Romeo5Category Average
Build Quality3.53.82

Score: 4.12/5

Quick Specs:

  • Reticle: 2 MOA
  • Weight: 5.1 oz
  • Dimensions: 2.5 x 1.5 x 1.6 inches
  • Battery: 40,000 hrs

The Sig Romeo5 Red Dot is a compact and reliable optic that’s designed for both tactical and sporting applications. One of the standout advantages of the Sig Romeo5 is its crisp and clear 2 MOA red dot reticle. The dot is sharp and highly visible, allowing for quick and precise aiming. The sight also features a motion-activated illumination system, which automatically turns on the dot when it detects movement and conserves battery life when not in use. This feature is especially convenient for those who often forget to turn off their optic.

Sig Romeo5 underwater testing
Submersion testing!

The sight holds zero even after heavy recoil, providing consistent accuracy. The integrated Picatinny mount makes it easy to attach to any compatible firearm, and the battery compartment is conveniently located on the side for quick access.

Sig Romeo5 Red Dot Sight Review by ReloadYourGear


  • Motion-activated illumination 
  • Shockproof and waterproof
  • Very affordable
  • Long battery life


  • Heavy

What Customers Say

Holds up to the recoil and honestly, I couldn’t have picked a better optic and mount. The setup was zeroed in 4 rounds and after that, I felt like I couldn’t miss! I keyholed rounds between 50 and 100 yards all day. This sight didn’t miss a beat and I will be buying more. I love Sig optics and they have yet to let me down and this one is worth every penny!


Love this! I have an EOTech which I love and I have to say this has the quality of EOTech! I put it on my KSG 12 and it holds zero with no problems!

Payne Hardwood

Best Holographic Sight: EOTech EXPS2

Factor EOTech EXPS2Category Average
Build Quality4.53.82

Score: 3.23/5

Quick Specs:

  • Reticle:1 MOA
  • Weight: 11.2 oz
  • Dimensions: 3.8 x 2.3 x 2.9 inches
  • Battery: 1,000 hrs

The EOTech EXPS2 is a compact and highly regarded holographic weapon sight that offers impressive performance for both professional shooters and firearm enthusiasts.

One of the standout features of the EXPS2 is its exceptional reticle visibility. The holographic display provides a clear and crisp reticle, allowing for quick target acquisition and improved accuracy. Its compact design is another advantage, making it suitable for various firearms without obstructing the shooter’s view.


  • Water-resistant
  • Rugged aluminum housing
  • Crisp reticle


  • Shortest battery life among our picks
  • Costs more than other brands
  • Heaviest among our picks

What Customers Say

My AR-15 is so fun to shoot with this Eotech. It was easy to sight in and it is really accurate! I love the quick detach mount. you can take it on or off in a second and it won’t lose its Zero!

Rick Wear

I am cross-eye-dominant. That means that while my left eye is dominant, I am right-handed. That causes all kinds of aiming problems that I find difficult to overcome (I find it difficult to close my left eye while keeping my right eye fully open). With the EOTech sights, I can keep both eyes open and I have no cross-eye-related sight picture shift.


Trijicon RMR Type 2 Adjustable Red Dot Sight

FactorTrijicon RMRCategory Average
Build Quality3.63.82

Score: 4.02/5

Quick Specs:

  • Reticle: 6.5 MOA
  • Weight: 1.2 oz
  • Dimensions: 1.8x 1.1 x 1 inches
  • Battery: 35,040 hrs

One of the standout features of the RMR Type 2 is its adjustable red dot brightness. This allows the shooter to customize the reticle intensity based on lighting conditions, ensuring optimal visibility and target acquisition. The sight’s compact size and lightweight design make it suitable for a wide range of firearms, without adding excessive bulk or hindering maneuverability.

The RMR Type 2 is renowned for its ruggedness and durability. It is constructed from forged aluminum and boasts a ruggedized design that can withstand recoil, impact, and harsh environments.

Trijicon RMR at range
At the range with the RMR


  • Water-resistant
  • Long battery life
  • Rugged construction
  • Compact and lightest among our picks


  • Expensive
  • Needs to dismount when changing batteries

What Customers Say

The RMR is always on, rigid enough to rack your pistol with, has a small profile for CCW, and the smaller MOA is perfect for target practice.


Installed on a H&K VP9, absolutely enhanced my performance after zeroing it. Great sight!

Robert Harris

Holosun 403B Micro Red Dot Optic

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FactorHolosun 403BCategory Average
Build Quality43.82

Score: 4.02/5

Quick Specs:

  • Reticle: 2 MOA
  • Weight: 2.82 oz
  • Dimensions: 2.45 x 1.43 x 1.6 inches
  • Battery: 50,000 hrs

The Holosun 403B Micro Red Dot Optic is a budget-friendly yet feature-rich optic with a compact profile, making it an ideal choice for pistols, shotguns, and AR-style rifles without sacrificing maneuverability.

With up to 50,000 hours of continuous use, this optic ensures reliable performance over extended periods without the need for frequent battery replacements. The optic also features 12 brightness settings, including two-night vision compatible options, allowing for easy reticle visibility adjustment in various lighting conditions.

Sig Romeo5 vs Holosun 403b frozen
Comparing the Sig Romeo5 to the Holosun 403B


  • Affordable
  • Longest battery life among our picks
  • Compact and lightweight
  • Made from durable aluminum housing
  • Comes with a Shake Awake feature
  • Comes with a limited lifetime warranty
  • Night-vision compatible


  • Stiff adjustment buttons
  • Low-quality battery tray
  • Red reflection visible in some lighting conditions
Holosun 403b Red Dot Sight Review by ReloadYourGear

What Customers Say

The height is perfect for my cheek and for the 1/3rd co-witness. For the price, you can’t beat it…it functions well and looks good doing it.

Caleb Rowe

A quality, tube-type red dot, with shake awake functionality, at a very affordable price. The small, 2 MOA dot doesn’t completely cover the target at carbine distances and doesn’t completely blow out with my astigmatism. Good range of illumination levels. The sight does not have to be removed from the weapon for battery changes, although there is a small tray that will require a screwdriver. This is not a heavy-duty, combat unit. But, so far, for my purposes, it’s just right. I’ll buy more of these.


Bushnell Trophy TRS-25

FactorBushnell Trophy TRS-25Category Average
Build Quality33.82

Score: 4.08/5

Quick Specs:

  • Reticle: 3 MOA
  • Weight: 3.6 oz
  • Dimensions: 2.5 x 3.4 x 2.2 inches
  • Battery: 5,000 hrs

Our last pick takes pride in its excellent light transmission and glare-reduction properties. The Bushnell Trophy TRS-25’s adjustment knobs also come with thick and durable water gaskets. When we did our hands-on testing and review of the Bushnell, we were impressed by how crisp and precise the adjustments were, with decent optics for the price.

Bushnell TRS-25 red dot aiming at Lego Mandolorian

Its 3 MOA red dot reticle features 10 adjustable brightness settings that let you acquire targets quickly and save your battery by setting the illumination to low.

The TRS-25 is also ready to mount on most Picatinny rails and it comes in a precision-engineered housing that can survive daily abuse and harsh environments.


  • Waterproof, fogproof, shockproof
  • Lightweight
  • Affordable


  • Short battery life

What Customers Say

I’ve run these on several different rifles. Never had a single issue with one. They keep zero, hold up well to the recoil of even 30 cal rifles, aren’t affected by rain, and stay solid on the gun. I like the variable red dot brightness and ease of adjustments. This is like a poor man’s Aimpoint. I’d go so far as to say that if you’re on a budget, I’d even be willing to put it on a combat or duty rifle. Mine have held up through thousands of rounds, several rifle courses, and many competitions. Well worth the money and weight.

John Scout

This red dot seems to be very well made, and it was super easy to install. I went to the range this past weekend, and it was super easy to get zeroed in, and it stayed accurate after shooting a box of 20 rounds. I used a boresighter as well, so I did not put any more money downrange than I needed to. I used about 5 rounds after using the boresighter to get it zeroed, and the rest was just for fun. I do wish it had an auto-off feature though. Just make sure you turn it off after use, do not allow the battery to drain. I also recommend getting a riser mount for your sight. It raises the sight enough to make it comfortable to see through. It was hard to use without this riser. You can see the riser in the picture.


Conclusion: Best Red Dot Sight for Marlin 45-70

Choosing the best red dot sight for your Marlin 45-70 involves considering several crucial features. By prioritizing the features we listed above, you can enhance your accuracy, confidence, and overall shooting experience. So, take the time and select a red dot sight that meets your needs, and unlock the true potential of your Marlin 45-70.

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Last update on 2024-04-11 / Images from Amazon Product API