Burris Fastfire 3 vs. Trijicon RMR Comparison (2024 Review)

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What’s the difference between Burris Fastfire 3 and Trijicon RMR?

I wanted to find out, so I bought both red dot sights and hand-tested everything:

  • Reticle
  • Durability
  • Battery life
  • Field of view
  • And so much more

By the end of this Burris Fastfire 3 vs Trijicon RMR comparison review, you’ll know which red dot sight is best for you.

Let’s get started!

Quick Comparison Table

FeaturesBurris Fastfire 3Trijicon RMR
MOA3 & 83.25
Magnification1x1x
Eye ReliefUnlimitedUnlimited
Illuminated?YesYes
Weight0.9 ounces1.2 ounces
Dimensions6 x 5 x 2 inches1.8 x 1.1 x 1 inches

Burris Fastfire 3 vs. Trijicon RMR Red Dot Sights Review

The Burris Fastfire 3 and Trijicon RMR promise speedy target acquisition and excellent aim for outdoor activities, like hunting and shooting after dark.

The Burris offers more pinpoint accuracy at short-range distances, all with the convenience of being a primary sight or paired with an existing reflex sight. The Trijicon RMR is a tiny but rugged red dot that packs a punch with its fierce close-quarter engagement abilities.

Both of these sights guarantee optimal aiming performance with high-quality illuminated red dots that adjust to any lighting situation.

I’ll be covering clarity, efficiency, durability, and more to determine which is the best reflex sight.

Let’s dive in!

Glass Clarity & Reticle

The Fastfire 3’s glass clarity is good, but I’ve got to say the sight picture isn’t as clear as the clarity on my Leupold or Trijicon optics.

BURRIS FASTFIRE 3 LENS (1)

However, I could get a crisp view out to 50 yards, so it’s not bad.

But it’s interesting to compare the reticles of the Burris Fastfire 3 and Vortex Venom. I own both of these optics and find the Burris’ smaller reticle weak in comparison.

BURRIS FASTFIRE 3 RED DOT

However, I’ve found that the Fastfire 3 is the most durable, so it depends on what every individual prefers in an optic. I can willingly trade out the best clarity for something that can take more abuse, but it’s a personal choice.

BURRIS FASTFIRE 3 FINISH

That’s why I like to recommend non-illuminated optics, like the Vortex Viper HS-4 16×50.

As for the reticle, it’s a 3 MOA dot with a sharp and bold illuminated red dot. Which is an excellent choice for rifles, but it also has top-notch pinpoint accuracy. I loved pairing this red dot sight with my Bushnell 1-4×24 riflescope to get the best accurate performance.

In addition, the red dot has a choice of three settings of manual brightness and automatic sensors that adjust to any lighting condition.

The RMR’s glass clarity is always crystal clear with its multi coated lens. In addition, the shape of its glass creates a wide-band light transmission for minimal change in the color of the target area.

TRIJICON RMR LENS (1)

I’m always impressed with the clarity from Trijicon because they consistently deliver exceptional glass quality.

TRIJICON RMR LENS

In addition, its 3.25 MOA dot makes it easy to locate the dot pretty quickly. My vision is decent, but I think this dot would be great for anyone with vision issues because it’s such a prominent dot.

TRIJICON RMR RED DOT (1)

The reticle’s auto brightness level adjusts effortlessly in dark to light conditions. So I didn’t even have to think about resetting it as the outdoor lighting changed during my testing phase of this optic.

Round 1 (Clarity and Accuracy) Champion: Trijicon RMR

Battery Life

The Burris has a CR1632 battery, which can last up to five years.

BURRIS FASTFIRE 3 SIGHT AND BATTERY

Yes, five years. This optic makes it possible due to the red dot’s automatic time-out feature, which saves valuable power after eight hours. That makes sustained night vision use no problem.

Plus, the battery is easily accessible on the top of the sight. So I didn’t have to remove the sight to change the battery. There’s also a low battery warning indicator, so I would feel excellent about using this sight for several years.

This optic reminds me of the even longer-lasting power of the Vortex Sparc and Sparc 2.

The Trijicon reflex sight has a CR2032 Lithium Battery with two years of use and five years in dark storage. This sight also includes a button lock-out mode and conserves battery power.

TRIJICON RMR ELEVATION

Another automatic mode feature is the RMR’s battery conservation mode. This helpful night vision feature adjusts the illuminated aiming dot to ambient lighting after 16.5 hours.

The battery features are close here, but I had to go with the Burris. Although the RMR has incredible battery power, nothing can beat the FF3’s five-year battery life.

Round 2 (Battery Life and Power) Champion: Fastfire 3

Eye Relief & Eye Box

The eye relief of the Fastfire 3 is unlimited.

BURRIS FASTFIRE 3 EYE RELIEF

After my testing phase at the range, I could get my target with both eyes open with swift accuracy. I tried this sight out with one of my lightweight Leupold riflescopes for even more precision at a longer distance.

The RMR’s eye relief is also unlimited, but I had difficulty aiming with both of my eyes open.

TRIJICON RMR LENS

So instead, I had to adjust which eye got a better view, making it difficult to match up with my dominant hand.

TRIJICON RMR OVERVIEW

Round 3 (Eye Relief) Champion: Fastfire 3

Durability & Weight

With its lightweight and compact design, the Burris didn’t disrupt my sense of balance or handling of my firearm.

BURRIS FASTFIRE 3 OVERVIEW

It weighs 25 grams or 0.9 ounces. So I appreciated the light-as-a-feather feel during my shooting practice.

BURRIS FASTFIRE 3 OVERVIEW (1)

I’ve found a similar lightweight, compact structure from Vortex riflescopes.

The RMR is rugged and durable with its aluminum construction and impact-absorbing design.

TRIJICON RMR OVERVIEW (1)

This durability feature has to do with its unique patented housing shape that dips down, which helps to divert trauma away from the lens, preventing shattered glass.

TRIJICON RMR MOUNTED - PISTOL

After testing it out, I can confidently say that this red dot sight, weighing in at 1.2 ounces, is the toughest miniature sight on the market. It could rival similar red dot sights with its rugged durability.

TRIJICON RMR MOUNT

Round 4 (Durability) Champion: Trijicon RMR

Windage, Elevation & Brightness Knob

The turrets of the Fastfire 3 offer smooth adjustments without the need for tools.

TRIJICON RMR WINDAGE AND SCREWS

This aspect is helpful since I’ve forgotten to bring tools with me in the past. So this feature was the life-saver of the day.

BURRIS FASTFIRE 3 ELEVATION TURRET AND BATTERY COMPARTMENT

I was able to zero this red dot sight at 10 yards. Plus, it held zero well throughout my shooting practice. Shooting practice with this red dot sight reminded me of the excellent zeroing capabilities of the Burris 332 and 536.

BURRIS FASTFIRE 3 ELEVATION TURRET

The RMR’s turrets adjust easily and hold zero solidly, which makes this sight simple to use.

TRIJICON RMR ELEVATION

This sight also doesn’t require tools, so I appreciated two sights with this feature. Plus, the turrets adjust with a soft but audible click.

TRIJICON RMR LENS

These sights are similar in several ways, but I liked the zeroing of the Burris. It was easy to zero at just 10 yards with great visibility and more accuracy.

TRIJICON RMR + BUTTON (1)

Round 5 (Windage Knobs and Turrets) Champion: Fastfire 3

Mounting

The Burris Fast Fire mount is available for the Fastfire 3, but I find it rather generic.

Burris FastFire Series Secure Reliable Durable Easy-to-Maintain...
  • FASTFIRE MOUNT - The Burris FastFire Series Red Dot Sight Mounting System is a comprehensive solution designed to accommodate any generation of FastFire Series red dot sights, offering a secure and...
  • COMPATIBILITY - The FastFire mounts from Burris accommodate any generation of FastFire Series red dot shooting sight, providing versatility and compatibility; It is available in a variety of options...
  • VERSATILITY - Whether for tactical applications, competitive shooting, or recreational use, the FastFire Series Mounting System offers versatility and flexibility, allowing shooters to customize their...

Meaning, the included mount may not be the correct length for all firearms.

BURRIS FASTFIRE 3 MOUNTED (1)

My recommendation for this sight would be the Lonsel Dove Tail mount because this sight fits so smoothly on Picatinny mount and Weaver rails.

LONSEL Dovetail to Picatinny Rail Adapter 11mm Dovetail to 21mm...
  • ✌ Precision Material - Premium out of aircraft grade aluminum alloy and black hard coat anodize finish, sturdy & durable.
  • ✌ Convert 11mm Dovetail to 21mm Picatinny Rail - 2.94 inches length at the base, the picatinny rail extends 3.94 inches allowing for more flexible optics placement.
  • ✌ Mount Base - Fit 11mm dovetail mounts, Base mount 3/8" to 7/8" converter adapter. Low profile 0.59" riser rail for scope.
BURRIS FASTFIRE 3 OVERVIEW

Mounting isn’t included for the RMR, but I highly recommend a Picatinny Rail like the Trijicon RM33 RMR Mount.

Trijicon RM33 RMR Mount, Adapter for RMR Low Profile, Black
  • Country Of Origin : China
  • The Package Height Of The Product Is 4 Inches
  • The Package Length Of The Product Is 8 Inches

This low mount is specifically designed for Trijicon sights to work with the RMR reflex sights. Plus, it’s easy to install and lightweight.

TRIJICON RMR MOUNTED - RIFLE

Although I’m not particularly impressed with the Burris FastFire mount, it’s much better than no mount at all. Plus, it is made explicitly for the Fastfire series of red dots. So all I had to do was upgrade to a Dove Tail mount to get everything I was looking for in the Burris Fastfire red dot.

Round 6 (Mounting) Champion: Fastfire 3

Price

The Burris costs $224.57 and is the more affordable choice from these two red dot sights.

Burris Optics Hunting Lightweight Versatile FastFire 3 Red Dot Sight,...
2,713 Reviews
Burris Optics Hunting Lightweight Versatile FastFire 3 Red Dot Sight,...
  • VERSATILE RED DOT OPTIONS - The FastFire 3, Burris's best-selling red dot sight, is available with a 3 MOA or 8 MOA dot. Choose the 8 MOA dot for quick target acquisition in short-range scenarios, or...
  • LIGHTWEIGHT AND TOUGH DESIGN - The FastFire 3 series is both light and tough, ensuring it won't compromise gun balance or handling. Its compact build makes it versatile for mounting on guns using...
  • ADJUSTABLE BRIGHTNESS - The automatic brightness sensor adapts to environmental conditions, providing a bright red dot for fast target acquisition. Additionally, it offers three manual brightness...

This red dot can’t be beat with its high-quality battery power, but I didn’t find it nearly as durable as the RMR. That said, it’s still the best for a budget and will perform effectively.

The RMR costs $469.99, which is a high price tag.

Sale
Trijicon RM06-C-700672 RMR Type 2 Adjustable LED Sight, 3.25 MOA Red...
  • 3.25 MOA ADJUSTABLE LED RMR: Features an automatic brightness mode and easy push buttons for eight adjustable brightness settings including 2 nv and 1 Super bright
  • DEPENDABLE ELECTRONIC DESIGN: Ruggedized Battery contacts and electronics ensure performance and survivability in harsh environments
  • UNIQUE PATENTED HOUSING SHAPE: Military-grade aluminum alloy forged housing shape diverts force of impact away from the lens, greatly increasing its durability

But I’d rather have an optic that can survive anything than deal with issues later on. In addition, its automatic brightness feature is also a win-win.

TRIJICON RMR OVERVIEW (1)

I’m going to give this win to the RMR, even though it’s double the price of the Fastfire 3. What’s my reasoning? I believe you get what you pay for, and as I mentioned earlier in this review, I’d much rather have the most durable optic available on the market.

Round 7 (Pricing and Cost) Champion: Trijicon RMR

Burris Fastfire 3 vs. Trijicon RMR Red Dot Sight: Which is Better?

Both the Burris Fastfire 3 and the Trijicon RMR offer swift target acquisition, pinpoint accuracy, and excellent illumination. I would highly recommend either of these red dots, but there can only be one champion.

And I declare the Fastfire 3 the better red dot.

Burris Optics Hunting Lightweight Versatile FastFire 3 Red Dot Sight,...
2,713 Reviews
Burris Optics Hunting Lightweight Versatile FastFire 3 Red Dot Sight,...
  • VERSATILE RED DOT OPTIONS - The FastFire 3, Burris's best-selling red dot sight, is available with a 3 MOA or 8 MOA dot. Choose the 8 MOA dot for quick target acquisition in short-range scenarios, or...
  • LIGHTWEIGHT AND TOUGH DESIGN - The FastFire 3 series is both light and tough, ensuring it won't compromise gun balance or handling. Its compact build makes it versatile for mounting on guns using...
  • ADJUSTABLE BRIGHTNESS - The automatic brightness sensor adapts to environmental conditions, providing a bright red dot for fast target acquisition. Additionally, it offers three manual brightness...

Here are the top reasons why:

  • More affordable
  • Battery time-out feature
  • Easy and fast zeroing capabilities
  • Unlimited eye relief great for one or both eyes open

There is my recommendation and the winner of this close race between these optics. With the Fastfire 3, I’m confident in getting the most extended battery life, lighter weight, and swifter target accuracy.

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