Best Red Dot For Ruger AR 556

The Ruger 556 has been a popular rifle for years, and it’s no wonder why. It is lightweight, easy to use and maintain, can be customized with aftermarket parts, and most importantly – it’s affordable.

Aimpoint Micro H-2 Red Dot Reflex Sight with Standard Mount - 2 MOA - 200185
29 Reviews
Aimpoint Micro H-2 Red Dot Reflex Sight with Standard Mount – 2 MOA – 200185
  • Advanced objective lens system for better light transmission and unmatched optical clarity

However, some drawbacks come with the gun as well. One of them is low-quality red dot sights that come preinstalled on the weapon.

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If you are in a hurry to purchase Best Red Dot For Ruger AR 556, and you want to make the best decision, here are our top 3 picks:

Top 3 Best Red Dot For Ruger AR 556

Aimpoint Micro H-2 Red Dot Reflex Sight with Standard Mount - 2 MOA - 200185
Aimpoint Micro H-2 Red Dot Reflex Sight with Standard Mount – 2 MOA – 200185
Advanced objective lens system for better light transmission and unmatched optical clarity
$745.00
Trijicon MRO-C-2200030 Miniature Rifle Optic (Mro) Sight, 2.0 MOA Adjustable Green Dot with Full CW Mount, Matte Black
Trijicon MRO-C-2200030 Miniature Rifle Optic (Mro) Sight, 2.0 MOA Adjustable Green Dot with Full CW Mount, Matte Black
Product Type: Sporting Goods; Item Package Dimensions: 12.6 L X 16.1 W X 17.1 H (Cm); Country Of Origin: United States
$509.20

With the increasing popularity of tactical and competitive shooting, many shooters are looking to improve their accuracy. One new trend is using red dot sights on rifles. When mounted on top of the Ruger AR 556, these sights allow users to quickly acquire targets with both eyes open and shoot more accurately than they would be able to with iron sights or a scoped rifle.

If you’re looking for a red dot sight that will work with your Ruger AR 556, look no further. We’ve done the research and found out which one is best.  In this blog post, We’ll walk you through what to consider when buying one of these sights and go over my top seven picks. You’ll find links to reviews below.

7 Best Red Dot For Ruger AR 556 (Ranked And Reviewed)

1. Aimpoint Micro H-2 Red Dot Reflex Sight

Aimpoint Micro H-2 Red Dot Reflex Sight with Standard Mount - 2 MOA - 200185
29 Reviews
Aimpoint Micro H-2 Red Dot Reflex Sight with Standard Mount – 2 MOA – 200185
  • Advanced objective lens system for better light transmission and unmatched optical clarity
  • 2 MOA dot with 12 settings for low light and daylight brightness

SPECIFICATIONS:

  • Dimensions: 5 x 5 x 3 inches
  • Weight: 1 Pounds
  • Magnification: 6x
  • Objective Lens: 20mm

The Aimpoint® Micro H-2 sight is a high-performance red dot sight that offers the features of superior optical quality, ruggedness and reliability with extreme ease of use, making it ideal for close quarter combat situations. 

The new Micro H-2 is built to withstand even more severe conditions than its predecessor. This sight provides 2 MOA dot sizes for fast target acquisition. The 12 settings allow you to customize the brightness to best match your environment. 

Micro H-2 Red Dot is a revolutionary sight for shooters who want to take their performance to the next level. The Aimpoint Micro H-2 is a 1x optic designed and built with the same uncompromising principles as all other Aimpoint products. 

The robust and ultra-compact design of the Aimpoint Micro allows it to be used in a wide variety of roles with different mounting options. It can be mounted on a handgun, shotgun or rifle, and any MIL-STD 1913 Picatinny rail. Which makes it ideal for use on virtually any type of weapon platform. The Aimpoint Micro uses a single standard battery that powers it up to 50000 hours.

Pros
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2. Trijicon MRO-C-2200030 Miniature Rifle Optic

Trijicon MRO-C-2200030 Miniature Rifle Optic (Mro) Sight, 2.0 MOA Adjustable Green Dot with Full CW Mount, Matte Black
43 Reviews
Trijicon MRO-C-2200030 Miniature Rifle Optic (Mro) Sight, 2.0 MOA Adjustable Green Dot with Full CW Mount, Matte Black
  • Product Type: Sporting Goods
  • Item Package Dimensions: 12.6 L X 16.1 W X 17.1 H (Cm)

SPECIFICATIONS:

  • Dimensions: 7 x 7 x 5 inches
  • Weight: 2 Ounces
  • Magnification: N/A
  • Objective Lens: N/A

The Trijicon MRO™ (Miniature Rifle Optic) is a sealed miniature reflex sight intended for use on rifles, carbines and shotguns to provide fast target acquisition. The large aperture and tapered light path maximize the viewing area in such a small optic, allowing for immediate target engagement – especially from non-standard shooting positions.

A vital feature of the MRO is its ability to be used as a handheld magnifier via optional mounting brackets. It provides the capability to extend your effective range while shooting. The large aperture provides a vast field of view that makes it easy to locate targets without shifting your eyes from the front sight post.

Dual-color illumination (Fiber optics provide daylight illumination, and tritium illuminates reticle at night) allows you to use either or both colors depending on the lighting conditions.  Combine all this with the ambidextrous brightness controls, sub-flush adjusters, advanced lens coatings and the fully sealed, waterproof housing, and you have the ultimate mini reflex sight.

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3. Vortex Optics Crossfire Red Dot Sight

Sale
Vortex Optics Crossfire Red Dot Sight Gen II - 2 MOA Dot , Black
1,773 Reviews
Vortex Optics Crossfire Red Dot Sight Gen II – 2 MOA Dot , Black
  • The updated Crossfire is a no-nonsense sight for near any application and needs a simple point of aim and none of the frills, the Crossfire should be at the top of your list.
  • With up to a 50, 000 hour battery life and night-vision compatibility at the lowest two settings, the sight will keep working in a variety of conditions. The low and skeletonized lower 1/3 co-witness mounts provide vesatility for this lightweight optic.

SPECIFICATIONS:

  • Dimensions: 4.7 x 5.65 x 2.7 inches
  • Weight: 5.2 Ounces
  • Magnification: 1x
  • Objective Lens: N/A

The Vortex Optics Crossfire Red Dot Sight is the perfect sight for your AR-556. The lightweight, compact design makes it easy to mount on any rifle with a Picatinny rail, and the 2 MOA dot will help you take down targets quickly. This red dot has 11 illumination settings, so you can easily find the one that works best for you, whether you’re shooting early or late in the day. The lower 1/3 co-witness mounts allow you to use iron sights still if necessary.

The Crossfire Red Dot Sight is a rugged and straightforward sight that delivers a crisp dot for fast target acquisition. It features our trademarked ACET technology, which provides 50,000 hours of continuous use on one battery. The sight automatically turns on when it senses motion and turns off after two minutes to prevent accidental battery drain. 

Vortex Crossfire Red Dot Sight is the perfect sight for shooters who want a quality red dot sight at an affordable price. The 2 MOA dot diameter promotes rapid target acquisition while providing enough light to keep your view clear and sharp. The unlimited eye-relief allows you to use this product with or without glasses. This optic is waterproof, fog proof and shockproof for ultimate durability.

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4. Bushnell Trophy TRS-25 AR

Bushnell Trophy TRS-25 Red Dot Sight Riflescope, 1x20mm, Black
12,366 Reviews
Bushnell Trophy TRS-25 Red Dot Sight Riflescope, 1x20mm, Black
  • Matte black featuring a 3 MOA Dot reticle with 11 brightness settings; Mounts easily on most picatinny rails and is compatible with pistols, shotguns, rifles and muzzleloaders
  • Waterproof construction: O ring sealed optics stay dry inside, even when totally immersed in water. Parallax – 50

SPECIFICATIONS:

  • Dimensions: 5.4 x 3.4 x 2.2 inches
  • Weight: 0.23 Pounds
  • Magnification: 1x
  • Objective Lens: 25 Millimeters

The Bushnell Trophy TRS-25 is a compact, lightweight and versatile Red Dot sight that features 11 brightness settings to match any environment. The 3 MOA red dot provides incredible accuracy at close range or long-distance shooting. 

TRS-25 AR is a red dot sight that is built for speed. The quick detach lever allows you to easily switch between your favorite rifles without removing the sight from the mount. It’s compatible with Picatinny rails and can be used on pistols, shotguns, rifles and muzzleloaders. 

The Bushnell Trophy is a specially designed riflescope that features a 25mm objective lens and an extended eye relief design that makes it easy to use with both eyes open. It has a 1x magnification, which allows you to shoot at long distances without the need for a magnified optic. 

It is a rugged, reliable and accurate riflescope that will keep you on target. This scope features a shockproof construction with nitrogen-purged fog proofing to withstand bumps, bangs, drops and the rough and tumble environment of the field. 

Best Red Dot For Ruger Ar 556
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5. Sig Sauer SOR52001 Romeo5

Sig Sauer SOR52001 Romeo5 1x20mm Compact 2 Moa Red Dot Sight, Black
8,049 Reviews
Sig Sauer SOR52001 Romeo5 1x20mm Compact 2 Moa Red Dot Sight, Black
  • 2 MOA Red-Dot provides 10 illumination settings (8 daylight plus 2 NV) for visibility in all light conditions
  • MOTAC (Motion Activated Illumination) powers up when it senses motion and powers down when it does not. Provides for optimum operational safety and enhanced 40,000+ hour battery life

SPECIFICATIONS:

  • Dimensions: 4.72 x 3.03 x 0.76 inches
  • Weight: 0.15 Kilograms
  • Magnification: 1x
  • Objective Lens: 20 Millimeters

The all-new Sig Sauer Romeo5 Red Dot is the most technologically advanced sight on the market today. It features an integrated red dot and reflex sight; this optic offers a 2 MOA aiming point for fast target acquisition. The ten illumination settings range from daylight bright to low light and night vision compatible. 

This model also features Motion Activated Illumination (MOTAC), which powers up when it senses motion and powers down when it does not. The M1913 Picatinny interface allows users to mount the Romeo5 on any platform or accessory that accepts this standard.

Additionally, Sig Sauer’s proprietary Motion-Activated Illumination automatically adjusts the brightness level as ambient light conditions change. Sig Sauer’s Romeo5 is a red-dot sight that provides the shooter with fast target acquisition, increased accuracy, and extended battery life.

Best Red Dot For Ruger Ar 556
Pros
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6. Rhino Red/Green Dot Reflex Sight

Ozark Armament Rhino Red/Green Dot Reflex Sight - 4 MOA Accuracy - 5 Brightness Settings for All Day and Night Use - Sealed Against Dust and Moisture - Mounts to Any Picatinny Rail
1,946 Reviews
Ozark Armament Rhino Red/Green Dot Reflex Sight – 4 MOA Accuracy – 5 Brightness Settings for All Day and Night Use – Sealed Against Dust and Moisture – Mounts to Any Picatinny Rail
  • GUARANTEED LIFETIME DURABILITY: Every sight from Ozark Armament is backed by our hassle-free LIFETIME GUARANTEE. Our sights are so durable we practically beg our customers to abuse them. We are a US company with real support: if you need help with our products we’re here for you.
  • CO-WITNESS CAPABILITY OUT OF THE BOX: Designed to co-witness perfectly with the included cantilever mount with any Ozark Armament iron sight or standard iron sights. The Rhino is easy to sight in and will hold a zero even after thousands of rounds.

SPECIFICATIONS:

  • Dimensions: ‎ 6.8 x 3.4 x 3.2 inches
  • Weight: 11.99 Ounces
  • Magnification: N/A
  • Objective Lens: N/A

The Rhino Reflex Sight is an excellent sight for the money. It’s lightweight, compact and straightforward to use. You can adjust the red or green dot for brightness, and it has adjustable windage and elevation. This site is perfect for beginners who want to get into long-range shooting but don’t want to pay a lot of money.

Rhino Reflex Sight is a tactical reflex red dot sight. The lens allows you to see the world around you, while the red and green dot provides quick target acquisition and pinpoint accuracy. It can be mounted on any weapon system or used as a handheld device. The Rhino Reflex Sight is built for rugged outdoor use that can withstand harsh environments. It’s waterproof, fog proof and shockproof.

Now you won’t have to worry about seeing your target because this sight gives you a clear line of sight. The multi-coated lens provides exceptional brightness in any lighting condition, so you’ll always be able to see your target clearly no matter where your marks are or what time it is.

Best Red Dot For Ruger Ar 556
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7. Burris 300234 Fastfire III

Burris 300234 Fastfire III with Picatinny Mount 3 MOA Sight (Black)
1,259 Reviews
Burris 300234 Fastfire III with Picatinny Mount 3 MOA Sight (Black)
  • PINPOINT ACCURACY: The FastFire III puts an unmistakable red dot at the point of impact within your field of view, giving you an immediate advantage in speed and accuracy.
  • LIGHTWEIGHT OPTICS: With lightweight construction and durable design, the FastFire III can be used as a primary sight or paired on top of an existing sight.

SPECIFICATIONS:

  • Dimensions: 6 x 5 x 2 inches
  • Weight: 0.31 Pounds
  • Magnification: 1x
  • Objective Lens: 15 millimeter

The FastFire III is a lightweight, low profile, small diameter red dot sight with an ultra-fast lock time. It features the same zero-resettable adjustment for windage and elevation that has become a FastFire trademark. The new Fastfire III also offers different reticle patterns to choose from, including the famous Duplex.

It is the next generation of red dot sighting technology. The FastFire III is ideal for use on an AR-556 or any other platform requiring a 3 or 8 MOA dot sight. It also features automatic brightness adjustment allowing you to quickly adapt from bright sunlight to low light conditions without adjusting any knobs.

The FastFire III is the quickest and easiest way to mount a red dot sight on your pistol. The FastFire III provides secure mounting that is strong and repeatable, returning to zero after disassembly and re-installation. 

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FAQs

When you are shooting with your rifle, it is essential to make sure that you have the best sight for your needs. One of the most famous sights for rifles is a red dot sight. 

It will make shooting faster and more accurate as well as easier in low-light conditions. Second, it’s an inexpensive way to upgrade your rifle without getting new optics or iron sights which can be costly upfront.

Double major in Engineering and Geology at the University of Minnesota. Experienced shooter & hunter for over 15 years. Certified NRA officer for over 10 years working as a writer at Ballachy.com .

The benefits of a red dot sight are many. With this type of sight, you can easily see your target and shoot quickly and accurately. You don’t have to worry about lining up the sights on your gun with the target. 

All you need to do is line up the red dot with your desired target, pull the trigger, and hit it. This sight is great for hunting or shooting at targets in competitions because you’ll be able to make quick decisions without having to waste time lining up both sights.

Double major in Engineering and Geology at the University of Minnesota. Experienced shooter & hunter for over 15 years. Certified NRA officer for over 10 years working as a writer at Ballachy.com .

I’m going to teach you how to mount a red dot sight on your Ruger AR-556. You’re going to need two tools, an Allen wrench and a screwdriver. The first thing you want to do is remove the front sight post by loosening the set screws with your Allen wrench. 

Now you can slide off the rear site leaf spring assembly and then reattach it after mounting your scope onto its base plate. Then use your screwdriver and loosen the set screws holding down the rear sight leaf spring assembly (which will allow it to move up). Finally, tighten all of those screws back down using both wrenches – easy peasy.

Double major in Engineering and Geology at the University of Minnesota. Experienced shooter & hunter for over 15 years. Certified NRA officer for over 10 years working as a writer at Ballachy.com .

Conclusion

The red dot sights we’ve discussed today are all top of the line and have a lot to offer. In making your decision, you will want to consider what features matter most for your needs. For example, if accuracy is critical or weight matters more than size, our first two options might not suit you. 

If budget is a limiting factor, there may be some other considerations before coming up with the perfect scope purchase! We hope this review has helped guide you towards finding the best red dot sight that meets YOUR specific needs- happy hunting.

Double major in Engineering and Geology at the University of Minnesota. Experienced shooter & hunter for over 15 years. Certified NRA officer for over 10 years working as a writer at Ballachy.com .

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