6 Best Red Dot For 300 Blackout

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Over the years, I’ve tested different handguns, including the much-talked-about 300 Blackout. Now, for those of you who’ve had the pleasure of using this fantastic firearm, you know it’s not just any run-of-the-mill gun. It requires the right accessories to unlock its full potential.

After months of testing different optics, I found the Trijicon MRO to be my top choice for the 300 Blackout. 

So the goal here is to walk you through how I’ve reviewed various Best Red Dot For 300 Blackout. 

We’ll dive into why certain sights perform better than others and what you should look for in a sight that will complement this specific firearm. Stay tuned; you won’t want to miss this. 

Top 5 Best Red Dot Sight For 300 Blackout

Below is the list of 5 best red dots for your 300 Blackout.

    ProductKey FeaturesRatings
Trijicon MRO
Wide lens
Multi-coated glass
Many mounting options
Easy to use control system
Holosun 510CA budget optic with good built.
Incredibly clear dot
Innovative battery-related features
Multiple reticle options
Aimpoint ProCombat-proven
30,000 battery hours
Vortex SPARC Gen IIStellar battery life with MOTAC
High durability
10 illumination settings
Quick to zero
Sig Sauer ROMEO 5 
Well-built and durable
Incredible battery life
Bushnell Trophy TRS-25Budget option

1. Trijicon MRO – Best Option

Hey folks, let’s talk about the Trijicon MRO. This bad boy comes with a large viewing window for faster target acquisition, eight adjustable brightness settings, and easy-to-set adjusters. 

We’re talking superior quality with multi-coated glass lenses, all housed in aircraft-grade aluminum. Yup, this sight is a rockstar.

Why to Buy: You’re probably asking, “Why should I pick this one?” First off, durability. This sight can take a beating and still deliver. 

It’s even water submersible up to 30 meters. How cool is that? Secondly, the wide lens design is a game-changer, folks. It’s not your average tunnel-vision microdot; this one opens up your visual field. 

Lastly, battery life! Five years if you keep it at setting 3. Longevity is the name of the game here.

Why Not to Buy: But wait, it’s not all sunshine and roses. There’s a slightly bluish tint to the lens. Some of you might find that annoying. 

Then there’s the price tag. It’s a bit on the higher side, and not everyone might find the investment justified.

Who Should Buy: Alright, who is this sight for? If you’re an experienced shooter looking for a robust, long-lasting sight, this is your pick. 

Outdoor enthusiasts, listen up: You can even take it scuba diving. Yep, I said it. For those looking for a wide lens and easy-to-use features, this sight is a dream come true. If you’re into long-range precision shooting, the 2 MOA dot size offers that crispness you crave.

My Testing

During my time with the 300 Blackout, the Trijicon MRO stood out like a champ. The wide lens offered a great field of view, and the adjustability was top-notch. 

Trust me, this sight enhanced my shooting experience tenfold. The durability held up well, even under harsh conditions. You pair this sight with a 300 Blackout, and you’re in for a treat.


  • Durable build
  • Wide lens for better visibility
  • Long-lasting battery life
  • Multiple brightness settings


  • Slightly bluish tint
  • Pricier than other options

2. Holosun 510C – The Best Overall


Brand: Holosun | Weight: 4.94 oz | Material: Aluminum & Titanium Hood| Length: 3.3 inches | Width: 1.68 inches | Height: 1.78 inches

What’s Special?

  • A budget optic but not built like one.
  • Clear dot
  • Innovative battery-related features 
  • Multiple reticle options

Let’s get right into it with the Holosun 510C. This sight isn’t playing games: open reflex design, LED tech, and titanium housing. 

Oh, and did I mention a 50,000-hour battery life? With multiple reticle options—2 MOA red dot and a 65 MOA ring—this sight is dressed to impress.

Why to Buy:

So why should you consider this? First off, battery life. It’s got a feature called “Shake Awake” that conserves battery like a pro. 

Next, multiple reticle options make it super versatile. Whether you want quick target acquisition or precise shooting, it’s got you covered. And folks, it’s astigmatism-friendly. The crisp and clear dot is a joy to use. Plus, the solar fail-safe feature is just the cherry on top!

Why Not to Buy:

Now, let’s talk about the drawbacks. It’s not made in the USA, so if that’s a dealbreaker for you, keep scrolling. 

Then there’s the weight. At 4.94 oz, it’s a tad heavier than some of its competitors. The sight might be budget-friendly, but some might find it lacking that “premium” feel because of the lower price tag.

Who Should Buy:

So who’s this for? If you’re after versatility, this is your guy. Those innovative battery features make it an excellent pick for extended use. 

Hunters and sport shooters, listen up because this is a sight that won’t let you down in the field. The reticle options make it suitable for various shooting activities. And if you have astigmatism, this is a sight to seriously consider.

My Testing

My go-to on the 300 Blackout has been the Holosun 510C. Battery conservation is fantastic; that “Shake Awake” is a lifesaver. 

Target acquisition? Smooth as butter. Trust me, this sight elevates the 300 Blackout experience, making your shooting both versatile and accurate.


  • Long battery life with “Shake Awake”
  • Multiple reticle options
  • Astigmatism-friendly
  • Solar fail-safe feature


  • Not made in the USA
  • Slightly heavier than competitors

3. Aimpoint Pro – The Combat Proven Optic


Brand: Aimpoint | Weight: 7.8 oz | Material: Aluminium| Length: 4.8 inches | Width: 1.9 inches | Height: 1.9 inches 

What’s Special?

  • Combat-proven
  • Aimpoint quality without breaking the bank. 
  • 30,000 hours of battery life. 

Let’s dive in with the Aimpoint PRO—a combat-ready red dot. It’s got a 2 MOA red dot, 30,000-hour battery life, and comes with a tool-less QRP2 mount. 

This sight also offers 10 brightness settings. Toss in front and rear flip-up caps, and you’ve got a sight that’s solid, feature-packed, and ready for anything.

Why to Buy: Why go for this one? First, it’s combat-proven—trusted by military and law enforcement globally. With 30,000 hours of battery life, it’s always ready. 

The glass is crystal clear, making target acquisition a piece of cake. The type-3 hard-anodized coating gives it a robust build. And, of course, the tool-less mounting makes it convenient as all get-out.

Why Not to Buy: Drawbacks? Well, the price tag is up there. Then there’s the weight at 7.8 oz; it’s not the lightest sight around. 

Plus, despite the mil-spec toughness, it can be overkill for casual shooters. So you might ask yourself, “Do I really need all this optic has to offer?”

Who Should Buy: Who’s this for, you ask? If you’re in law enforcement or the military, this is right up your alley. Serious hunters and tactical shooters will also benefit from its features. 

If you’re the type who doesn’t want to compromise on quality and reliability, this sight is for you.

My Testing

I ran the Aimpoint PRO on my 300 Blackout, and let me tell you, it didn’t disappoint. The clear glass and 2 MOA red dot provided precise targeting.

Battery life? Never an issue. The brightness settings made it versatile for various lighting conditions. Simply put, this sight delivers.


  • Combat-proven and reliable
  • Crystal-clear glass
  • Long battery life
  • Easy, tool-less mounting


  • High price tag

4. Vortex SPARC Gen II – Highly Recommended

Meet the updated SPARC red dot sight, a lightweight yet rugged piece of gear. It features a 2 MOA dot, versatile for both close and long-range shots. 

Battery life? Oh, you’re good for up to 700 hours at max settings and 50,000 on the lowest. It has 12 illumination settings and unlimited eye relief. Plus, it comes with an integrated base for flexible mounting options.

Why to Buy: Let’s talk perks. The SPARC’s 2 MOA dot is versatile. Close-range or long-distance, it’s got you covered. Then, there are the 12 illumination settings. 

Day or night, you can tweak the dot’s intensity. And let’s not forget the durability. Whether it’s rain or dust, this sight holds its own.

Why Not to Buy: So, what’s not to love? Well, 700 hours at max settings isn’t industry-leading. There are sights out there with battery life. 

If you’re the forgetful type who leaves it on the highest setting, you might find yourself replacing batteries more often than you’d like.

Who Should Buy: This sight is for those who need versatility without the extra weight. It’s perfect for hunters moving through different environments. 

Law enforcement officers looking for something reliable yet unobtrusive will find it handy. Heck, even casual shooters looking for an easy-to-use, durable sight will appreciate what SPARC offers.

My Testing

So, I hooked up the SPARC on my 300 Blackout. From close to extended ranges, the 2 MOA dot was a winner. Battery life? No concerns during my tests. 

The illumination settings were a nice touch, adapting well to light changes. Simply put, this sight performs.


  • Versatile 2 MOA dot
  • Long battery life at low settings
  • Durable and weatherproof
  • Multiple illumination settings


  • Battery life at max settings could be better

5. Sig Sauer ROMEO 5 – Best For The Price


Brand: Sig Sauer | Weight: 5.1 oz | Material: N/A| Length: 2.46 | Width: 1.5 inches | Height: 1.51

What’s Special?

  • It is a well-built and durable option
  • The best option for the price
  • Incredible battery life

The ROMEO 5 from Sig Sauer packs a punch. With a 2 MOA red dot, it’s perfect for all types of shooters. This sight comes with Motion Activated Illumination (MOTAC), which makes it super smart. 

It sleeps when you do and wakes up instantly with movement. You get a whopping 40,000-hour battery life. Yep, you heard that right. It also has 10 brightness settings, two of which are night vision compatible.

Why to Buy: Let’s cut to the chase—this sight is a steal. For its price, the ROMEO 5 brings in Aimpoint-level battery life, thanks to its MOTAC tech. It turns off when still, saving you energy. 

A clear lens, anodized tube, and sturdy build mean it can take a beating. Plus, you have 10 illumination settings for every lighting condition.

Why Not to Buy: Not all is sunshine and rainbows. It’s not made in the US, and for some, that’s a downside. If you’re keen on supporting American-made products, this might not be for you. 

Who Should Buy: This sight is a catch for anyone on a budget. Are you a hunter, a casual shooter, or even a law enforcement officer? The ROMEO 5 has you covered.

Especially if you have astigmatism, you’ll appreciate the crispness of the dot. Its versatility makes it useful for both novices and pros. Honestly, you get so much value for what you’re spending.

My Testing

I took the ROMEO 5 out with my 300 Blackout. Did an impact test, a water submersion test, and even a freezing test. It passed every one of them, keeping its zero. 

I was especially impressed by how quickly it adapted to changes in lighting conditions with its multiple settings.


  • Stellar battery life with MOTAC
  • High durability
  • 10 illumination settings
  • Quick to zero


  • Not made in the US

6. Bushnell Trophy TRS-25 Red Dot – The Budget Optic


Brand: Bushnell | Weight: 4 oz | Material: Metal | Length: 2.5 inches | Width: 3.4 inches | Height: 2.2 inches 

What’s Special?

  • The below 100 dollar option
  • Waterproof, fog proof, shockproof
  • Lightweight

Meet the Bushnell Trophy TRS-25, a red dot sight that’s all about value. This optic features a 3 MOA dot reticle with 11 brightness settings. Weighing just 4 ounces, it’s a featherweight. 

It’s also waterproof, shockproof, and fog-proof, thanks to its nitrogen purging. With 5,000 hours of battery life at mid-setting, this optic isn’t going to let you down soon. It’s got a matte black finish that’s easy on the eyes.

Why to Buy: Alright, listen up! If you’re tight on budget but don’t want to compromise on features, this is your go-to. With 11 brightness settings, you can adjust according to any lighting. 

The 3 MOA dot makes target acquisition a cinch. It’s also lightweight; add it to your 300 Blackout without feeling bogged down. 

Let’s not forget its resilience. It’s waterproof, fog-proof, and can take a bump or two without breaking a sweat. Battery life? Super solid.

Why Not to Buy: Okay, let’s not sugarcoat it. It’s budget-friendly but not as durable as some other premium options out there. If you’re someone who’s rough on your gear, you might find it not up to the mark in the long run. 

While it offers 11 brightness settings, some users report that they’re not as bright as you’d expect. So, in super bright conditions, you may struggle a bit.

Who Should Buy: If you’re new to the world of optics or perhaps a casual shooter not willing to break the bank, this is for you. Also, if you’re dealing with firearms like the 300 Blackout that don’t require heavy-duty optics, this is a match made in heaven. 

The Trophy TRS-25 offers enough features to keep both newbies and seasoned shooters content. Its light weight makes it an excellent choice for hunters on the move.

My Testing

Took this bad boy out with my 300 Blackout. First thing, it was easy to mount and set up. I walked through drizzles of high humidity and even dropped it once (don’t judge me!). 

Surprisingly, it held up well, though not as robust as some other optics I’ve tried. The battery lasted as advertised, and the brightness settings were okay, if not spectacular.


  • Budget-friendly
  • 11 brightness settings
  • Waterproof, fog-proof, shockproof
  • Lightweight


  • Not as durable as premium models
  • Brightness may be lacking in extreme conditions

Factors To Consider Before Buying A Red Dot For Your 300 Blackout

1. Durability

Durability is an important factor while choosing your red dot optic. The durable options in my list are the Trijicon MRO, SIG Sauer ROMEO 5, and the combat-proven Aimpoint Pro. 

2. Battery Life and Protection

For some shooters, battery life can be the only important consideration. Some optics have an extended battery life, and some have added features like shake awake that protect the battery. 

But good hours of battery life are important because you want your optic to be on when you need it. For example, the HoloSun has 50,000 hours of battery life and the ”Shake Awake” feature that protects it. 

3. Reticle Settings 

A good reticle has multiple settings and brightness options. For example, the Holosun 510C has multiple reticle options with a dot, a circle, and a circle-dot combination. 

4. Price

For some people, price is the only factor that matters. The Sig Sauer Romeo 5 and the Bushnell Trophy TRS-25 are the two options that give you good performance without spending too much money. 


Alright, let’s sum this up. After exhaustive testing and hands-on use, I’ve come to the conclusion that the Trijicon MRO emerges as the top dog for pairing with a 300 Blackout. Look, I get it. Everyone’s needs and preferences are different. 

Some of you may want battery longevity, while others might prioritize a wide field of view or durability. Good news—this list has something for everyone. For the budget-conscious, the ROMEO 5 and Bushnell Trophy TRS-25 are fantastic picks. 

If you’re all about that premium feel and don’t mind splurging, the AIMPOINT Pro won’t disappoint. Need versatility? The Vortex SPARC Gen II and Holosun 510C have got you covered. 

But at the end of the day, for an all-around excellent sight that excels in every department, the Trijicon MRO is my top choice. 


What is the effective range of a 300 Blackout pistol?

According to the U.S. Armed Forces, the maximum effective range is 460 meters or 503 yards with a 16” barrel.

What is the advantage of a 300 Blackout pistol?

Offers a wider range of projectile choices, burns its full potential in a 9-inch barrel, better for hunting, and can cycle both super and subsonic ammo.

Does 300 Blackout hit harder than 556?

Yes, 300 Blackout has nearly double the foot-pounds of impact compared to 5.56 at 200 and 300 yards.

Is a 300 Blackout pistol worth it?

Yes, if you plan on hunting medium or large game, such as deer or hogs, the 300 BLK is superior.

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I quit my job as a high-powered lawyer to pursue the outdoors. I spend most of my time fishing and hunting but am also an avid shooter with two years experience writing about firearms related topics.

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