Trijicon GL201-C-600649 Suppressor Night Sight Set Glock Review: The Gold Standard for Co-Witnessing

I remember the exact moment my frustration with factory Glock sights boiled over. I had just mounted a brand-new Trijicon RMR on my G19 slide and attached my suppressor for a range session. The excitement was palpable. I brought the pistol up, looked through the crisp red dot, and saw… nothing but the back of my suppressor. The standard-height plastic sights, which had served adequately for basic shooting, were now completely obsolete, rendered useless by the upgrades I had invested in. It was a classic case of one upgrade necessitating another. Without the ability to co-witness—to use the iron sights through the optic window as a backup—my state-of-the-art setup had a critical failure point. This experience isn’t unique; it’s a rite of passage for many shooters who venture into the world of red dots and suppressors. The simple truth is that factory sights are a starting point, not a final destination, especially for a customized firearm. This is the precise problem the Trijicon GL201-C-600649 Suppressor Night Sight Set Glock was engineered to solve.

What to Consider Before Buying Suppressor-Height Night Sights

A set of gun sights is more than just an aiming accessory; it’s a critical interface between you and your firearm’s potential for accuracy, especially under duress. For those running suppressors or slide-mounted red dot optics, suppressor-height night sights are a non-negotiable component for building a reliable, redundant system. They provide a clear sight picture over the top of most standard suppressors and allow for a “co-witness” with a red dot, ensuring that even if your optic’s battery dies, you are never without a reliable aiming solution. The primary benefit is confidence—the absolute certainty that you can make an accurate shot in any lighting condition, with or without a functioning electronic sight.

The ideal customer for this type of product is a discerning firearm owner who has already invested in a suppressor or a red dot sight for their Glock (models 17-39). This includes competitive shooters, law enforcement officers, and responsible citizens who demand a professional-grade, fail-safe setup for their defensive handgun. It’s for the individual who understands that the “buy once, cry once” philosophy applies doubly to essential safety equipment. Conversely, these sights might be overkill for a casual plinker whose Glock will remain in its factory configuration. If you have no plans to add a suppressor or optic, the extra height could be an unnecessary expense and might not fit standard holsters. For those users, standard-height night sights or even fiber-optic sights could be a more practical and economical alternative.

Before investing, consider these crucial points in detail:

• Height & Co-Witness Capability: The primary function of these sights is to be tall enough to see over a suppressor and co-witness with a red dot. You must verify that the height is compatible with your specific optic and suppressor combination. The goal is typically a “lower 1/3” co-witness, where the iron sights appear in the lower portion of the optic window, providing an unobstructed view of the red dot.
• Illumination & Sight Picture: Night sights are defined by their low-light performance. Look for high-quality tritium vials that offer a bright, clear glow without requiring batteries. The three-dot configuration with white outlines, like that on the Trijicon set, is a popular choice because it offers a fast and intuitive sight picture during the day while the tritium takes over at night.
• Materials & Durability: Your sights are mounted to a reciprocating slide and must withstand thousands of rounds of recoil and potential impacts. Steel or metal construction is mandatory. Look for features like silicone-cushioned tritium lamps and protective sapphire jewels, which are hallmarks of premium brands like Trijicon and ensure longevity. Avoid plastic sights for any serious-use firearm.
• Ease of Use & Maintenance: While tritium has a long half-life (Trijicon warranties theirs for 12 years), the installation process is a key factor. Most high-quality sights require a proper sight pusher tool for installation to avoid damaging the sight or the slide. Be prepared for professional installation or to acquire the right tools. Once installed, they are virtually maintenance-free.

Keeping these factors in mind, the Trijicon GL201-C-600649 Suppressor Night Sight Set Glock stands out in all critical areas. You can explore its detailed specifications and see user feedback here.

While the Trijicon GL201-C-600649 Suppressor Night Sight Set Glock is an excellent choice, it’s always wise to see how it stacks up against the competition. For a broader look at all the top models, we highly recommend checking out our complete, in-depth guide:

First Impressions: Unboxing the Trijicon GL201-C-600649

Opening the familiar Trijicon packaging, the first impression is one of sheer substance. Unlike the flimsy plastic factory sights that feel like an afterthought, the Trijicon GL201-C-600649 Suppressor Night Sight Set Glock feels dense and robust in hand. The matte black finish is smooth and uniform, a testament to quality machining. Each sight—the square-notch rear and the single-dot front—is clearly hewn from a solid piece of metal. You can immediately tell these are built to withstand abuse.

Holding them up to the light, the bright white rings around the tritium capsules are crisp and perfectly circular, designed for rapid daytime acquisition. Flipping off the lights in the workshop reveals their true purpose: a brilliant and reassuring three-dot green glow emanates from the lamps. The glow is potent but not overpowering, providing a perfect sight picture in complete darkness without causing a distracting bloom effect. There’s no assembly required out of the box, but the heft and precise dovetail on the rear sight signal that installation will require proper tools, not just wishful thinking and a hammer. This isn’t a budget accessory; it’s a serious piece of professional-grade hardware, and it looks and feels the part from the moment you get it out of the package.

A Deep Dive into the Trijicon GL201-C-600649’s On-Range Performance

A product’s spec sheet is one thing; its real-world performance is another. We mounted the Trijicon GL201-C-600649 Suppressor Night Sight Set Glock on our Glock 19 Gen 5 MOS, which is equipped with a Trijicon RMR and a SilencerCo Omega 9K. This is the exact environment these sights were born to thrive in, and our extensive testing confirmed their reputation as an industry leader.

Installation and Fitment: A Test of Patience and Precision

Trijicon recommends professional installation, and after our experience, we understand why. This is not a knock against the product, but a testament to its precise and tight tolerances. The factory plastic rear sight came off with minimal effort, but installing the new steel Trijicon rear sight required a high-quality sight pusher. We confirmed what many users have noted: the rear dovetail is incredibly tight. This is a feature, not a bug. It ensures that once the sight is centered and installed, it will not shift or lose zero, even under heavy recoil. Attempting this with a hammer and punch risks marring the finish on both the slide and the new sight.

The front sight installation brought its own nuances. As reported by some owners of MOS models, the included front sight screw was slightly too long, preventing it from fully tightening down against the slide. This caused a minor lateral wobble initially. This is a known issue with the thinner floor of the MOS cutout. The fix was simple: we carefully filed down one or two threads from the end of the screw. After a dab of blue Loctite and proper torque, the front sight was absolutely rock-solid, with no play whatsoever. For non-MOS slides, this is typically not an issue. The key takeaway is that achieving a perfect, secure fit requires the right tools and possibly minor fitting, but the result is a bomb-proof installation that inspires total confidence.

Uncompromising Visibility: Day and Night Sight Picture

Once installed, the sight picture is phenomenal. During the day, the three bright white rings are a massive upgrade over the Glock factory’s “ball-in-a-bucket” sights. They draw the eye instantly, allowing for faster front sight focus and more intuitive alignment. The 0.15-inch square-notch on the rear sight provides a perfect balance of speed and precision, offering enough light on either side of the front post for quick acquisition up close, while still being precise enough for accurate shots at 25 yards.

However, it’s when the sun goes down that the Trijicon GL201-C-600649 Suppressor Night Sight Set Glock truly comes alive. The green tritium lamps, protected by sapphire jewels to ensure even light distribution, glow with an intensity that we found to be perfect. They are significantly brighter than many budget night sights but are not so bright as to create a distracting “bloom” that can obscure a target in pitch-black conditions. We found them to be brighter and more defined than several competing models we’ve tested. This constant, battery-free glow is the core of their value proposition. Whether you’re in a dimly lit indoor range, a dark parking lot, or your home at 3 AM, you have a clear, usable sight picture the moment you present the firearm. The confidence this provides is immeasurable. For shooters looking to build the most reliable handgun possible, this always-on, battery-free illumination is a critical feature.

The Co-Witness Advantage: Seamless Integration with Optics and Suppressors

This is the number one reason to buy this specific set of sights. With our RMR mounted, the sight picture was exactly what we hoped for: a perfect lower-1/3 co-witness. The top of the iron sights sits cleanly in the lower third of the optic’s window. This is the ideal setup for most shooters. It keeps the iron sights out of the way, providing a clean, uncluttered view of the red dot and the target area. Yet, they are instantly available if the optic fails. By simply shifting your focus slightly, you can transition from the red dot to the three green tritium dots without breaking your cheek weld or grip.

When we attached the suppressor, the sights performed flawlessly. The height is perfectly calculated to clear the diameter of most standard 9mm and .45 pistol cans, including our Omega 9K. That initial frustration I felt with the factory sights was replaced by the satisfaction of a well-designed system working in harmony. There was no guesswork, no “walking” the rounds in by aiming over the top of the can. Just a crisp, clear sight picture right over the suppressor body. For anyone running a “can” on their Glock, this capability transforms the shooting experience from a frustrating chore into an intuitive action.

Built to Last: Trijicon’s Legendary Durability

Trijicon’s reputation for toughness is well-earned, and the construction of these sights reflects that. The entire housing is machined from steel, ready to handle the violent reciprocation of the slide for tens of thousands of rounds. But the real innovation lies in how they protect the delicate tritium lamps. Each glass vial of tritium is suspended in silicone rubber within an aluminum cylinder. This multi-layer cushion isolates the lamp from shock and the heavy G-forces of recoil. A sapphire jewel cap, one of the hardest materials known to man, sits over the lamp to protect it from solvents, cleaning tools, and punctures. While we read one anecdotal report of a sight breaking after a drop, our experience and the overwhelming consensus from the shooting community is that these sights are exceptionally resilient. During our testing, which included one-handed slide manipulations off a barricade using the rear sight, they didn’t budge or show any signs of weakness. This is a set of sights you can bet your life on.

What Other Users Are Saying

Our findings are strongly echoed by the broader community of users. The consensus is overwhelmingly positive, with shooters consistently praising the Trijicon GL201-C-600649 Suppressor Night Sight Set Glock for its core functionality. One user perfectly captured the sentiment, stating they offer a “perfect height super bright in dark,” and are a significant improvement over the cheap factory sights for daytime use. Many users confirm that these sights provide a perfect co-witness with optics from Trijicon, Vortex, and Burris, calling them “awesome” for this purpose.

However, the feedback isn’t without its critiques. The most common negative point, which we also noted, is the premium price. One user bluntly called them “astronomically overpriced,” a sentiment shared by others who feel the cost is high for what they are. Installation difficulties are the second-most cited issue, with multiple people emphasizing that the rear sight is “super tight” and that a “dedicated sight pusher tool” is required. Several users also experienced the front sight being loose on MOS slides due to the screw length, confirming our own findings and the need for Loctite and potential minor modification.

How Does the Trijicon GL201-C-600649 Stack Up? A Look at the Alternatives

While the Trijicon GL201-C-600649 Suppressor Night Sight Set Glock is a top-tier choice for its specific purpose, it’s important to understand the landscape of other sighting systems. The alternatives provided serve different, sometimes complementary, roles.

1. Sightmark Ultra Shot A-Spec Reflex Sight

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The Sightmark Ultra Shot A-Spec is not a direct competitor but rather a primary optic that the Trijicon sights would serve as a backup for. This is a red dot reflex sight, offering a wide field of view, multiple reticles, and rapid target acquisition. A user would choose the Sightmark as their main sighting system for speed and ease of use. However, because it relies on batteries, it is critically vulnerable to electronic failure. This is why pairing it with a set of co-witnessing iron sights like the Trijicons creates a complete, redundant system. You would buy the Sightmark for speed, and the Trijicons for reliability and backup.

2. Streamlight TLR-6 Weapon Light for Glock 42/43/43X/48

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The Streamlight TLR-6 is in a different category altogether. It’s a combination weapon-mounted light and laser. Its purpose is not to provide a sight picture itself, but to illuminate a target in low-light conditions and provide an active laser aiming point. While it aids in low-light shooting, it doesn’t replace the need for sights. In fact, a weapon light and night sights are a powerful combination. The light allows for positive target identification, and the night sights provide a foolproof aiming reference. The TLR-6 is an essential tool for target ID, while the Trijicon sights are for aiming. Note that this specific model is for smaller Glocks and not the models the Trijicon sights fit.

3. GRG MFG Laser Bore Sighter

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The GRG Bore Sighter is a tool, not a sighting system. This device is used to help with the initial zeroing of sights or optics without firing a shot. You insert the laser cartridge into the chamber, and it projects a beam down the barrel, showing an approximate point of impact. It’s a useful and ammo-saving tool for getting your new Trijicon sights (or a red dot) “on paper” before you head to the range for fine-tuning with live fire. One would buy this product to facilitate the installation and zeroing of the Trijicon sights, not as an alternative to them.

The Final Word: Is the Trijicon GL201-C-600649 the Right Choice for Your Glock?

After extensive testing and analysis, our verdict is clear. For the Glock owner who runs a red dot optic, a suppressor, or both, the Trijicon GL201-C-600649 Suppressor Night Sight Set Glock is not just a good choice; it’s arguably the industry standard. The build quality is exceptional, the tritium illumination is bright and reliable, and most importantly, the height is perfectly engineered for a clean co-witness and suppressor clearance. They provide the ultimate peace of mind, ensuring you have a viable aiming solution no matter the conditions or the status of your electronic optic.

Yes, the price is steep, and the installation requires the correct tools and a bit of patience. These are not budget sights. They are a professional-grade investment in your firearm’s capability and your own confidence. If you are a serious shooter who demands uncompromising performance and bomb-proof reliability from your equipment, the value proposition is undeniable. You are paying for a best-in-class product from a brand trusted by military and law enforcement agencies worldwide. For building the ultimate suppressed or optics-ready Glock, these sights are an essential component.

If you’ve decided the Trijicon GL201-C-600649 Suppressor Night Sight Set Glock is the right fit for your needs, you can check its current price and secure your set here.

Last update on 2025-10-20 / Affiliate links / Images from Amazon Product Advertising API