Best Red Dots and Iron Sights For the Ruger GP100 Revolver

Chris G.

Review Boxes

Trijicon RMR Type 2: Tough and Best Overall
Overall Rating: 8.2
-Impact-deflection design
-Battery conservation mode
-Long battery life

Vortex Optics Venom: Best Bang For The Buck
Overall Rating: 7.0
-Oversized window
-Low-profile design

Holosun HS507C X2: Best Trijicon Alternative
Overall Rating: 8.2
-Innovative features
-Manual and automatic brightness
-Equipped with solar panels

HIVIZ GPLW01 Ruger GP100: Best Front Handgun Sight
Overall Rating: 7.0
-Wave design increases brightness
-Choice of Litepipes

MEPRO Tru-Dot: Best Iron Night Sight For GP100
Overall Rating: 7.5
-Sold as a set
-Luminous tritium sighting dots

From my personal experience, there’s a variety of sight options worth considering for the Ruger GP100. Let’s check out these Ruger GP100 sights.

As I was readying my Ruger GP100 revolver for the forthcoming competitive shooting season, I’m aware of the important role of choosing the best red dots and iron sights for this specific firearm. This powerful  357 revolver deserves a sight that can match its power.

I’ve tested a variety of red dot and iron sights to assess their performance and measure their effect on my shooting accuracy. My personal favorite is the Trijicon RMR Type 2 due to its durability and impressive features. However, picking the best sight is not merely about brand names and models.

It involves understanding the mounting solutions, front handgun sights, and even night sight alternatives. Let me discuss the various optics that I think will fit the Ruger GP100.

Suggested Ruger GP100 Sights

From my personal experience, there’s a variety of sight options worth considering for the Ruger GP100. Let’s check out these Ruger GP100 sights.

1. Trijicon RMR Type 2: Tough and Best Overall

Review Box

Overall Rating: 8.2
Reticle: 8.0
Brightness Settings: 7.5
Night Vision Gear compatibility: 8.0
Lens Quality: 8.5
Target Acquisition: 8.5 
Windage and Elevation: 8.5 
Durability And Reliability: 8.5
Size and Weight: 8.5
Battery: 8.0
Mounting Options: 8.0

Impact-deflection design
Battery conservation mode
Long battery life
Higher cost 
Lens seems a bit small
No reticle shape options

For the top-rated sight for Ruger GP100, the Trijicon RMR Type 2 takes the lead. It boasts unmatched durability, adaptable design, advanced electronics, and battery-saving features.

This sight has a unique housing shape that directs impacts away from the lens, ensuring it lasts longer. Its ruggedized electronics ensure that the sight remains operational in the harshest conditions. It can also be submerged to 66 feet.

The Trijicon RMR Type 2 has a multi-layered lens that provides an accurate color presentation for precise aiming. Parallax-free and offering an unlimited eye-relief, the multi-coated lens eliminates glare and distortion. Reticle brightness can be adjusted manually or automatically. It is also compatible with night vision gear.

Windage and elevation and elevation controls are flushed so they won’t be accidentally changed during dynamic situations. It also flexibly fits with various firearms, including rifles, pistols, shotguns, and carbines.

With Trijicon’s dedication to innovation and thorough testing, this sight rises as the preferred choice for Ruger GP100.


Can be more expensive than other red dots
Lens seems a bit small
No reticle shape options

Technical Specifications

Dimensions: 1.8 in x 1.1 in x 1 inches
Weight: 1.2 oz. 
Magnification: 1x
Reticle Pattern: 1, 3.25, or 6.5 MOA Dot, depending on the model
Reticle Color: Red
Illumination Source: LED
Power Source: 1 CR2032 Lithium Battery
Battery Life: Over 4 years of continuous use (when used at 70ºF (21ºC)) at setting 4 of 8.
Adjustment: 1 MOA Per Click
Housing Material: Forged Aluminum
Finish: Matte Black
Submersion Depth: 66 feet


Patented design that deflects impacts
Dual illumination via a tritium-phosphor lamp and fiber optics
True-color, multi-coated lens that reduces glare, distortion, and color shift
User-friendly multi-function brightness adjustment buttons
Tool-less windage and elevation dials
Ruggedized electronics to ensure optimal performance in harsh conditions
Auto-brightness adjustment to conserve battery power
Waterproof to up to 66 feet

2. Vortex Optics Venom: Best Bang For The Buck

Vortex Optics Venom Red Dot Sight – 3 MOA Dot
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Review Box

Overall Rating: 7.0
Reticle: 6.5
Brightness Settings: 7.0
Night Vision Gear Compatibility: 0.5
Lens Quality: 9.0
Target Acquisition: 9.0
Windage and Elevation: 8.5 
Durability And Reliability: 7
Size and Weight: 8.5
Battery: 5.5
Mounting Option: 8.0

Oversized window
Low profile design
Short battery life
Thin lens shroud 
Dot seems to be a bit faint

The Vortex Optics Venom is a standout choice for Ruger GP100 sights, and it provides an exceptional balance of cost and performance. The red dot sight’s durable aluminum casing, fully multi-coated lenses, and accessible power and dot intensity controls are all notable features.

The main come-on of this sight is its large parallax-free, multi-coated lens. There’s no obstruction in the sight picture, and the reticle is very defined. Shooting accurately and speedily is a breeze while maintaining awareness of the surrounding areas.

I also love the low-profile design of the Vortex Venom, which allows co-witnessing with traditional iron sights. That, together with the large window, makes the sight picture so encompassing. This is quite an innovative design considering that the battery compartment is right at the top middle of the sight.

This reflex sight also has an auto-brightness mode which adjusts the reticle to optimal brightness in a given lighting condition, thanks to its ambient light sensor. Brightness can also be adjusted manually. 

Users have reported some initial challenges in locating the dot, but this issue seemed to be resolved with continued use. Although there have been mixed comments concerning its compatibility with CCW holsters, the Vortex Optics Venom consistently provides an enhanced shooting experience.


Relatively short battery life
Lens shroud is thin and can be easily damaged
Dot seems to be a bit faint during the first few uses
Oversized window may interfere with some conceal carry holster designs

Technical Specifications

Reticle: 3 MOA Dot
Reticle Color: Red
Power Source: 1 x CR1632
Runtime: 550 Hours
Mounting: Picatinny / Weaver
Magnification: 1x
Impact Point Correction: 1 MOA
Windage Adjustment: 130 MOA
Elevation Adjustment: 100 MOA
Water Resistance: Waterproof
Dimensions: 1.9 x 1.1 x 1.0 inches
Weight: 1.05 oz


ArmoreTek coating protects the exterior lens from dirt, oil, and scartches
Multi-coated lens for reduced distortion and glare
Parallax-free that eliminates reticle centering
Rugged construction that absorbs shocks and recoil

3. Holosun HS507C X2: Best Alternative of Trijicon

Review Box

Overall Rating: 8.2
Reticle: 9.5
Brightness Settings: 9.0
Night Vision Gear Compatibility: 8.0
Lens Quality: 7.0
Target Acquisition: 7.0 
Windage and Elevation: 8.0 
Durability And Reliability: 8.0 
Size and Weight: 8.0 
Battery: 9.5
Mounting Options: 8.0

Innovative features
Manual and automatic brightness
Solar panels
Somewhat constricted window
Sight picture has a yellowish tint
Reticle is quite faint when powered solely by solar panels

Holosun has always been one of my favorites when it comes to optics. The Holosun HS507C X2 is another sight for the Ruger GP100 Revolver. 

Holosun is known for its many innovations. One of these standout features is the multi-reticle red dot sight, which provides a range of aiming options. The default is dot-and-ring reticle. I can use the circle to paint close-distance targets. However, I have the option to switch off the ring for a more uncluttered sight window. Really cool!

The Holosun HS507C X2 automatically shuts off if it stays motionless for 10 minutes (adjustable to 12 hours). However, it reactivates when it detects slight movement. This feature helps save battery life, which is translated through Holosun’s whooping 50,000 hours of battery life.

The Holosun HS507C X2 also has solar panels that act as ambient light sensors to automatically adjust the reticle brightness. More than that, the panels can power up the red dot sight even if there’s no battery as long as there’s daylight. This optic has 12 brightness settings, 2 of which are night vision gear compatible.

Lastly, the sight’s tough build promises longevity. It is designed to withstand rugged use and can endure harsh environments without compromising performance.


Somewhat constricted window
Sight picture has a yellowish tint
Reticle is quite faint when powered solely by solar panels

Technical Specifications

Reticle: 2 MOA Dot and 32 MOA Circle
Light Wavelength: 650nm
Reticle Color: Red or Green, depending on the model
Parallax Free: Yes
Unlimited Eye Relief: Yes
Magnification: 1x
Multi-Coatings: Yes
Power Source: Solar and Battery
Battery Type: CR1632
Battery Life: 50,000 hours
Brightness Setting: 10 Daylight and 2 Night-vision compatible
Window Size: 0.63 x 0.91 inches
Dimension: 1.78 x 1.15 x 1.15 inches
Weight: 1.5 oz.
Housing Material: 7075 T6 Aluminum
Surface Finish: Anodize
Adjustment per Click: 1 MOA
Wind and Elevation Travel Range: ±50 MOA
Submersion Rating: IP67


Multiple Reticle System for different reticle shapes for different shooting conditions
Solar FailSafe for auto brightness adjustments and solar power
Shake Awake technology that “wakes up” a shutdown red dot
Tough and scratchproof
Multi-coated, anti-scratch lens

4. HIVIZ GPLW01 Ruger GP100: Best Front Handgun Sight

Review Box

Overall Rating: 7
Optics: 8.0
Brightness: 8.0 
Target Acquisition: 5.0 
Durability And Reliability: 8.0
Size and Weight: 8.0
Mounting Options: 7.0 

Wave design increases brightness
Choice of Litepipes
Requires manual sighting alignment with the rear sight
Not sold with rear sights

What if you don’t want a red dot but still want an upgrade to your Ruger GP100? I suggest changing the front iron sight of your GP100 with the HIVIZ GPLW01 front sight.  

The sight’s design is characterized by diagonal waves, a feature that improves its brightness. You can choose between red, green, and yellow tritium fiber optic Litepipes, which glow visibly in dim light conditions. The sight body is made entirely of steel, which further contributes to its robustness.

Installing the HIVIZ GPLIZ01 is easy and fast. The impact on sight visibility and precision is remarkable.

However, this is just an alteration to a front sight. Personally, I prefer just going for a red dot.


Requires manual sighting alignment with the rear sight
Not sold as a set with rear sights

Technical Specifications

Color: Green, Red, White
Style: Handgun Sight
Item Weight: 9.07 Grams
Magnification Minimum: 1x
Mounting Type: Weaver Mount
Night vision: None 
Size (LxWxH): 1 x 0.5 x 0.5 inches


LITEWAVE® interchangeable LitePipe design
All steel construction for added durability
Factory height front sight compatible with factory rear sight

5. MEPRO Tru-Dot: Best Iron Night Sight For GP100

Review Box

Overall Rating: 7.5
Optics: 8.0
Brightness: 7.0 
Target Acquisition: 6.0 
Durability And Reliability: 8.0
Size and Weight: 8.0
Mounting Options: 8.5 

Sold as a set
Luminous tritium sighting dots
Requires manual sighting alignment with the rear sight

Consider the MEPRO Tru-Dot if you’re looking to upgrade your Ruger GP100’s iron sights. The luminous alignment points are especially useful during nighttime operations and nocturnal hunting. This high-quality iron sight is powered by the brightest tritium optics in the industry.

The 3-dot white high-contrast are white, but they glow green at night or in limited light situations, guaranteeing quick target sighting. Tritium brilliance is guaranteed for 12 years.

The sight’s sturdy metal build makes them resistant to drops and shocks.

Aligning traditional iron sights requires practice. Thus, if you’re a “point-and-shoot” guy, you might want to just go directly to red dots than iron sight upgrades. 


Requires manual sighting alignment 

Technical Specifications

Color: Green
Style: Front and Rear-Set
Item Weight: 22.68 Grams
Material: Metal
Magnification Minimum: 1 x
Compatible Devices: Handgun
Mounting Type: Integral Mount
Night vision: Yes


Metal construction for durability
Luminous dots for better visibility
Easy to install
Compatible with many firearm models

Considerations When Purchasing Red Dot Sights

a closeup of Ruger GP100 Revolver

When choosing a red dot sight for the Ruger GP100, consider several pivotal factors to ensure your purchase meets your shooting needs.

  1. Recoil Resistance: Revolvers like the Ruger GP100 can produce significant recoil forces, and the sight must be able to withstand these without losing zero. Look for a red dot sight explicitly designed to handle the recoil generated by the specific caliber of your revolver.
  2. Holster Compatibility: Check if the red dot sight is compatible with holsters for your revolver. The addition of a red dot sight may affect the fit in certain holsters, so it’s important to ensure that your chosen sight works well with your preferred holster.
  3. Revolver Frame and Design: Revolvers come in various frame sizes and designs such as small, medium, or large frames. Ensure that the red dot sight you choose complements the overall design and size of your revolver without interfering with the ejection rod, loading, or unloading processes.
  4. Open or Tube Style: Revolvers often have a longer cylinder and may require a specific type of red dot sight, such as an open-style sight or a tube-style sight. Consider the design of your revolver and choose a sight that aligns well with its unique characteristics.
  5. Ease of Windage and Elevation Adjustment: The design of some revolvers may make it more challenging to access the windage and elevation adjustment controls. Look for a red dot sight with accessible and easy-to-adjust controls, especially if your revolver has a top strap that limits the space available for adjustments.
  6. Low Bore Axis Consideration: Revolvers typically have a higher bore axis than semi-automatic pistols. This can affect the sight picture and the trajectory of the bullet. Some red dot sights are designed with a lower profile, helping to minimize the impact on the bore axis and maintain a more natural sight picture.
  7. Rugged Construction for Field Use: If you plan to use your revolver in the field, consider a red dot sight with rugged construction. This includes durable materials and a robust design that can withstand harsh conditions commonly encountered in outdoor environments.
  8. Quick Target Acquisition: Revolvers are often chosen for close-quarters self-defense situations. Ensure that the red dot sight allows for quick target acquisition, and its design facilitates fast and instinctive aiming.
  9. Field of View: Pay attention to the field of view provided by the red dot sight. A wider field of view can be beneficial, especially in dynamic shooting situations where you need to be aware of your surroundings.
  10. Battery Replacement Accessibility: Consider how easy it is to replace the battery, especially if the sight is mounted in a way that makes accessing the battery compartment challenging. Some red dot sights allow for easy battery changes without removing the sight from the revolver.

Considerations When Purchasing Iron Sights

If you’re shopping for iron sights for your Ruger GP100, you need to carefully consider several factors to make an informed purchase.

  1. Sight Type: The Ruger GP100 typically comes with adjustable rear sights and a ramp front sight. However, aftermarket options may include fixed or adjustable sights, night sights, or fiber-optic sights. Choose the type that best suits your shooting preferences and intended use.
  2. Adjustability: Adjustable sights allow you to fine-tune your point of impact, which can be especially useful for different loads or shooting distances. If you prefer flexibility in sighting, opt for adjustable rear sights.
  3. Material and Construction: Look for sights made from durable materials such as steel or aluminum. The construction should be robust to withstand recoil forces without losing zero. Quality materials ensure longevity and reliability.
  4. Visibility: Consider the visibility of the sights, especially if you plan to use the Ruger GP100 in various lighting conditions. Options like fiber-optic or tritium night sights can enhance visibility in low-light situations.
  5. Front Sight Height: Ensure that the front sight height is appropriate for your chosen load and shooting distance. A front sight that aligns well with your preferred ammunition can improve accuracy.
  6. Ease of Installation: Some sights may require professional gunsmith installation, while others are designed for user-friendly installation. Consider your comfort level with DIY installation or factor in the cost of professional installation.
  7. Finish and Coating: Choose sights with a corrosion-resistant finish or coating to ensure durability and longevity, especially if you plan to use your Ruger GP100 in diverse weather conditions.

About the Ruger GP100 Revolver

a closeup of Ruger GP100 Revolver

The GP100 is a second-generation double-action revolver launched by Ruger in 1985. This hard-wearing firearm, designed for ceaseless use of .357 Magnum ammunition, has a reputation for durability and dependability.

The GP100 is unique for its innovative lock mechanism featuring a lever on the crane, a distinctive shift from conventional designs. Added to this, the revolver comes with a compact rectangular peg grip, enabling the customization of grip shapes. To improve comfort, Ruger has also fitted it with Santoprene grips which help in absorbing recoil.

The sturdy frame of the GP100, along with a smooth trigger action, makes it a popular choice among shooting enthusiasts. This revolver has earned its status as a modern classic due to its excellent performance and durability.

Ruger has thoughtfully produced a series of videos that give detailed instructions on the assembly, cleaning, and reassembly of the GP100. These resources are crucial for the upkeep of your revolver and for gaining a deep understanding of its complex features.

To achieve shooting accuracy, it’s not just important to choose the right red dot or iron sight, but also to fully understand the capabilities and features of the Ruger GP100. 


Selecting the appropriate sight for your Ruger GP100 can markedly improve your time at the range. You could go for a red dot sight, such as the acclaimed Trijicon RMR Type 2, the Vortex Optics Venom, or the Holosun HS507C X2.

Alternatively, you might fancy traditional iron sights as upgrades. These simple optical devices don’t need any batteries or special features—just your skill and prowess in aligning them. The key lies in understanding your specific shooting needs and tastes. Keep in mind that a worthy sight is a long-term investment towards honing your shooting prowess.

About the author

The name's Chris. Just a regular dude who loves firearms. I've been shooting since I was a kid. My old man taught me the ropes.

I'll never forget the first time I missed an easy shot on a buck, thanks to a bum scope. The image was fuzzier than my dog's butt. After that, I got obsessed with understanding scopes. What makes the good ones tick and the bad ones trash. After a few years and a few thousand bucks, I learned what separates the winners from the losers. Once I had a good stockpile of knowledge, I launched this site.

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