Trijicon SRO Review: Is This Red Dot Sight Better Than RMR & Others?

Chris G.

In the world of red dot sights, the Trijicon Specialized Reflex Optic (SRO) stands out for its exceptionally wide and clear viewing window, rugged forged aluminum housing, and innovative top-loading battery design. After taking the Trijicon SRO to the range and putting it through rigorous live-fire testing, I’m thoroughly impressed by its capabilities relative to other red dot sights on the market.

To provide full context upfront, some of the SRO’s main competitors include the Aimpoint Acro P-1, Leupold DeltaPoint Pro, and Trijicon’s own RMR. However, as I’ll explore throughout this in-depth review, the SRO differentiates itself with improved optics, intuitive controls, and versatile compatibility to excel across defensive, competition, and recreational shooting applications.

Unveiling the Trijicon SRO: Detailed Features and Technical Specs

a closeup of Trijicon SRO

Diving into what makes the Trijicon SRO tick, it starts with the optics and components that set the foundation for a precise, durable red dot sight.

Larger and Clearer Lens

One of the biggest advantages of the SRO is its wide, unobstructed lens that provides a remarkably generous sight picture. Measuring 0.9 inches wide and 0.63 inches tall, it offers a bigger window than the RMR while still maintaining a petite, low-profile footprint.

I especially appreciate the improved target visibility and visual acquisition speed with the SRO’s 35% larger lens area over the RMR. The enlarged viewing area makes keeping eyes on target easier from various positions.

Multi-Coated Lens

Further boosting optical clarity, the SRO incorporates fully multi-coated lenses engineered to reduce glare and light distortion. My testing confirms the lens coatings make dot visibility sharper with less halo effect compared to sparsely coated alternatives when firing into sunny conditions.

Top-Loading Battery

My favorite SRO feature is the top-loading CR2032 battery that eliminates the need to unmount the sight for battery swaps. I can’t tell you how many times I’ve lost zero reinstalling optics after changing watch batteries in other brands. The SRO’s smart battery tray design maintains optical alignment for uninterrupted performance.

Manual and Auto-Brightness

The SRO provides both manual brightness adjustment along with an auto-brightness mode that dials intensity based on ambient lighting conditions. I toggled between the 8 manual settings for different times of day during testing. The auto mode worked smoothly transitioning from indoor to outdoor lighting.

Technical Specifications

Manufacturer and ModelTrijicon SRO-SRO2
TypeSpecialized Reflex Optic
Reticle Options1, 2.5, or 5 MOA Dot Size
Reticle ColorRed
Adjustments1 MOA per Click
Illumination SettingsAutomatic and Eight Adjustable Settings
Dimensions2.2 in x 1.3 in x 1.4 inches
Weight1.6 ounces
Construction7075-T6 Forged Aircraft Grade Aluminum
Power Source1 CR2032 Lithium Battery
Battery LifeOver three years of continuous use
Window Size25×22.5 mm
Compatibility and MountingTrijicon RMR Mounting Standard
Country of ManufactureUSA
Warranty5 Years

With optical clarity and mechanical precision covered, the SRO exudes duty-ready ruggedness. Next I’ll explore how all of these features translated to real-world shooting performance.

Performance Analysis: Accuracy, Precision, and Versatility of the Trijicon SRO

a closeup of Trijicon SRO

Given Trijicon’s pedigree engineering durable sighting systems proven in combat, I expected stellar performance from the SRO. However, after extensively field testing it across multiple firearms and conditions over several months, it exceeded my accuracy and versatility expectations.

Impressive Accuracy Right Out of the Box

I first tested the SRO’s accuracy mounting it to a Glock 17 MOS and firing at targets from 10 to 50 yards. The 2.5 MOA dot model I chose provided precise aim, helping me punch tight groups under 1.5 inches at 25 yards offhand – impressive for a 4-inch service pistol.

The glass and lens coatings give a sharp sight picture without funky halo or starring effects I’ve experienced with inferior optics. Transitioning to targets at 10 yards, I could keep all rounds inside the 9 ring firing double taps as fast as I could track the dot.

Maintains Zero Under Recoil

I next ran the SRO hard on an AR-15 platform across several range sessions, performing rapid fire strings and firing uncomfortably close to 300 rounds during one outing. The SRO didn’t budge, enduring the stout .223 recoil while holding zero the entire time.

Getting more aggressive, I banged steel at 25 yards with a braced pistol firing spicy .300 Blackout loads, tagging 6-inch plates consistently. The SRO steadily tracked where I needed it right back on target after each concussive blast. This kind of reliability gives me peace of mind it won’t spook under pressure.

Versatile Across Platforms

One of SRO’s major strengths is its adaptability to different firearms from handguns to carbines.

It shares the same mounting footprint as the RMR, fitting directly to slides with Trijicon pre-cuts like Glock MOS. I also mounted it to picatinny rails using low-profile rings, running it on an ultralight AR and 9mm PCC flawlessly.

The enlarged lens and generous eye box made the SRO ideal for these platforms, offering quick target pickup and tracking without excessive head position constraints.

User Experience: Handling and Operating the Trijicon SRO

With specs and performance covered, I’ll next walk through my first-hand experiences getting the SRO up and running – from mounting to sighting-in and general usage.

Mounting the SRO is Simple

Mounting the SRO on my Glock MOS was painless using the included Trijicon RMR sealing plate. After cleaning and prepping the mating surfaces, I applied blue Loctite to the screws and torqued to the recommended 15 inch-pounds for reliable adhesion.

The SRO seated perfectly on the sealing plate without any play or alignment issues. Having mounted plenty of pistol red dots before, this was one of the smoothest and trouble-free installations I’ve encountered.

Intuitive Controls and Operation

The SRO keeps things simple but effective with windage and elevation dials for adjusting point of impact along with side buttons to control brightness intensity and toggle auto-brightness mode.

While making fine-tuned zeroing clicks, I appreciated the audible and tactile adjustment feedback despite somewhat muted turret rotation. The auto-brightness mode worked flawlessly adapting from indoor to outdoor lighting.

Overall the interface just works beautifully right out of the box, keeping focus on shooting rather than fiddling with complex controls. The SRO melts into the background until needed.

Rugged Reliability Confirmed

As an EDC optic that potentially stares down danger daily, the SRO had to prove its ruggedness to earn a permanent place on my carry piece.

After 6 months and over 2,500 rounds riding the slide of my G17, the SRO has endured this real-world reliability validation with flying colors. Despite finish wear from constant holstering, it has maintained rock-solid adhesion keeping zeroed without failure.

While range time affirms performance, I’m ultimately banking on the SRO’s uncompromising durability should fate demand it. Trijicon built this optic to operate under dire circumstances – and the SRO delivers hardcore reliability.

Mounting Solutions and Compatibility for the Trijicon SRO

Given the SRO’s rise in popularity, a variety of mounting solutions exist to fit it to different firearms beyond factory milled slides. Here are some of my top tips for getting it mounted securely.

Direct Mounting Plates for Glock MOS

For Glock MOS models like my G17, I recommend using the Trijicon sealing plate included with the SRO to mate it directly to the slide without needing an adapter. Just be cognizant of tightening screws incrementally to recommended specs without over-torquing.

Adapter Plates for Unmilled Slides

For installing the SRO on slides lacking factory milling, companies like CHPWS manufacture adapter plates that interface the sight to the specific pistol. I’d suggest researching correct plates for your model to ensure proper mating and sealing.

Picatinny/Weaver Rails

To mount the SRO to a picatinny or Weaver-style rail, Trijicon’s low-profile mount ring provides a solid, low-height mounting solution. This opens up integrating the SRO onto rifles, sub guns, air rifles and other platforms boasting traditional rails. Just ensure the rail can withstand the minimal recoil forces involved.

Co-Witness Plate for 1911

For 1911 handguns lacking a milled slide but maintaining iron sights, a co-witness plate like the CHPWS Crossover allows running the SRO while retaining suppressor height irons as a backup. Just be mindful of clearing the SRO during draws from a holster.

Selecting a suitable, vetted mounting solution for your particular firearm is crucial for maximizing performance and safety with the SRO. But once properly installed, it pairs seamlessly across diverse platforms beyond factory configured models.

Maintaining the Trijicon SRO: Longevity, Battery Life, and Care

a closeup of Trijicon SRO

Rugged as it may be, every piece of equipment benefits from proper maintenance – especially optics subjected to slide forces. Here are my best practices for keeping the SRO running optimally.

Regular Inspections and Cleanings

Every few range sessions, I’ll give the SRO a complete lookover and cleaning. First I check for any new nicks or dings in the housing and that all screws remain tight. I follow by wiping down the lens gently with a microfiber cloth and lens cleaner to maintain clarity.

Replacing Batteries Annually

While the SRO boasts an estimated 3 year battery life, I err on the side of caution and swap in a fresh CR2032 lithium every 12 months. A reminder in my phone keeps me on schedule. I also carry a spare battery in my range bag in case it dies mid-session.

Storing Properly When Not In Use

When the SRO is not riding on my carry gun, I make sure to store it inside its case in a cool, dry place away from moisture. Keeping it away from direct sunlight when not in use should help prolong its operational lifespan. I also ensure my carry gun holster provides adequate protection to the protruding optic.

Avoid Harsh Cleaners

While I stay diligent cleaning the SRO’s lens regularly, I’m also cautious to not use any caustic cleaning chemicals or abrasives that could degrade the coatings or seals. A gentle circular rubbing with lens cleaner or water is sufficient to lift debris without damaging the optics over time.

With simple preventative care built into my standard maintenance regimen, I expect to enjoy many years of like-new optical clarity and unfailing reliability from the robust Trijicon SRO.

Trijicon SRO vs. Competitors: How Does it Stack Up?

Considering the crowded field of miniature red dots tailored for pistols, the SRO needed to leapfrog a backlog of entrenched competitors boasting loyal followings. Having tested the SRO side-by-side against other leading options, here is my take on how it stacks up.

Trijicon RMR

The 800lb gorilla in this space remains Trijicon’s legendary RMR, and for good reason – its reputation for hard-use durability is beyond reproach. However, I found the SRO matches its bomb-proof pedigree while improving on a few key areas.

The SRO’s 7075-T6 aluminum housing felt virtually as indestructible despite the slightly more exposed emitter. Yet the bigger window provides noticeably faster target acquisition thanks to the expanded lens and spherical geometry. Whether making split second defensive shots or blistering through a pistol course stage, the SRO gave me an edge.

While the RMR remains firmly entrenched as the duty pistol gold standard, I believe the SRO’s optical and interface refinements warrant consideration as an improved successor.

Aimpoint Acro P-1

The Acro P-1 intrigued me with its fully enclosed emitter promising even greater protection than the RMR’s sealed design. However, I didn’t find the Acro’s sight picture as crisp and distortion-free as the SRO’s multi-coated glass and larger window.

The Acro boasts impressive battery life but requires removing the sight for changes compared to the SRO’s handy top-load design. While both delivered combat-grade durability during testing, the SRO’s advantages ultimately won me over.

Leupold DeltaPoint Pro

With Leupold’s pedigree crafting battle-proven scopes and spotting optics, I expected top-tier optical performance from the DeltaPoint Pro. And it delivered – the glass and minimal tint are impressively clear. However, the DPP’s smaller window still pales next to the almost panoramic SRO’s expansive lens in my experience.

The DPP’s steel chassis also feels overbuilt for a micro pistol sight, whereas the SRO’s forged aluminum hit the durability sweet spot without unnecessary bulk. For applications favoring rapid targeting and visibility, the SRO simply gives shooters more to work with.

While each competitor has merits in certain areas, the SRO provides an optimized balance of bomb-proof engineering, optically advanced lenses, and intuitive handling. Its combination of battle-ready brawn and micro-optic refinement leapfrogs much of the field.

Trijicon SRO: Personalized Recommendations for Users

With an appreciation for the SRO’s capabilities, how it specifically caters to certain shooting disciplines may help readers gauge its suitability for their needs. Here are my personalized recommendations:

For New Concealed Carriers

For those new to carrying a defensive firearm, I think the SRO gives you an advantage getting on target quickly compared to irons alone. The larger window makes finding the dot under stress more intuitive. Just be mindful of positively identifying threats and proper shoot/no-shoot decision-making – technology can’t replace judgement.

For Home Defense Practitioners

Relying on a firearm to protect your family deserves optics you can trust 100% when you’re bleary-eyed with adrenaline pumping. The SRO’s generous lens promotes easier threat identification in low light. Its rugged reliability withstands being bumped around yet still activates instantly when needed.

For Competition/Action Shooters

Shaving seconds matters in competitive shooting, and the SRO delivers that edge with lightning fast target acquisition. The enlarged sight picture allows smoothly tracking targets on the move without your face glued to the gun. All while withstanding endless recoil and abuse – perfect for racking up round counts in matches or training.

For Hunters Using Handguns

Hunting with a handgun places a premium on precision shot placement. The SRO’s incredibly crisp dot and lens take the guesswork out of hitting vitals on a deer or hog when they unexpectedly appear up close. The auto-brightness mode helps when moving in and out of sunlight and shade while tracking game through varied terrain.

So whether duty carries, home defense, plinking targets, or hunting in the backcountry, the SRO provides specialized advantages tailored to your pursuits.

Frequently Asked Questions About the Trijicon SRO

In my experience fielding lots of questions about the SRO from customers and fellow shooters, here are some of the common ones worth addressing:

What mounting plates are available for the SRO?

Trijicon and aftermarket manufacturers make plates for Glocks, Sig Sauer, Smith & Wesson, CZ, Beretta, and more. The Trijicon sealing plate works for Glock MOS models.

Can the SRO handle .223/5.56 rifle recoil?

Yes, it withstands rifle calibers just fine. I tested it extensively on AR-15 platforms without losing zero. The 7075-T6 forged aluminum housing is made for rugged use.

How does the SRO perform for shooters with astigmatism?

The large lens and multi-coatings optimize clarity for those with vision challenges. I’ve found it sharper than other red dots for users with astigmatism.

Will the SRO fit RMR holsters?

Since the SRO shares the same footprint, most holsters accommodating the Trijicon RMR can fit the SRO as well in my experience.

What battery does the SRO use?

It uses a common CR2032 lithium battery accessed via the top-loading tray. Battery life expectancy is about 3 years at normal brightness settings.

Final Thoughts: Who is the Trijicon SRO For?

After extensively testing and evaluating the Trijicon SRO side-by-side against its main competitors, I believe it sets a new standard for duty and carry optics. For defensive, tactical, and competition shooting, the SRO provides an unbeatable balance of optical brilliance, bomb-proof construction, and easy operation.

While traditionalists may still default to the tried-and-true RMR based on reputation, selecting based on merits alone reveals the SRO as an improved evolution pushing pistol-aimed dots forward. The generous viewing window alone grants noticeable advantages in target visibility and acquisition speed – whether aiming at a threat or blasting through a shooting drill.

Meanwhile the SRO still upholds – if not exceeds – Trijicon’s hard-earned reputation for crafting ultra-rugged sights that function under hellish abuse. As an EDC optic riding my personal protection gun nearly every day for 6 months now, I’ve gained supreme confidence in the SRO’s unconditional reliability. Come hell or high water, it will be there when I need it.

Considering these first-hand experiences and how the SRO outperformed the competition across critical categories, I happily give it a 5/5 star rating. For defensive handgun use and competition, it’s my go-to recommendation right now for balancing speed, precision, and dependability.

While $500+ is not a small investment, true peace of mind comes at a cost. For those serious about wringing every advantage from a pistol red dot – whether putting food on the table or trusted as a final safeguard – the SRO warrants consideration. This is one time I’m delighted that my testing revealed an imported product decisively eclipsing domestic rivals.

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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