Description
Adding a red dot or a suppressor to your slim-frame Glock changes the whole equation, and your factory iron sights suddenly sit too low to be useful. That is exactly the gap these Trijicon Suppressor/Optic Height Sights fill. They stand tall enough to co-witness through most pistol-mounted optics and clear the added bulk of a suppressor, so you always have a solid aiming reference whether your dot is running or not.
What Sets These Trijicon Night Sights Apart
This is a three-dot tritium setup that glows on its own, no batteries and no charging required. The front blade wears a bright yellow outline that pulls your eye to the front sight quickly, while the rear stays blacked out so your focus lands where it should. In daylight you get a clean, high-contrast picture; when the lights drop, all three green tritium lamps light up for a true low-light aiming solution. Trijicon backs the green lamps for 12 years from the date of manufacture.
Built to Take a Beating
Trijicon didn't cut corners on the construction. The tritium lamps sit inside protective aluminum cylinders and are capped with a sapphire jewel that spreads the light evenly while shielding the lamp from solvents and punctures. Each lamp is then cushioned on silicone rubber inside a machined steel body, so heavy recoil and repeated impacts don't rattle anything loose. The steel bodies carry a black finish and a square rear notch for a clean, repeatable sight picture.
Fitment for Slim-Frame Glocks
These fit the Glock 42, 43, 43X, 43E, and 48, and they're designed to work alongside the RMRcc mounting plate. The front blade measures 0.144 inches wide with an overall height of 0.503 inches, and the rear sits at 0.554 inches overall. Because these are pressed on to spec, professional installation is the way to go to keep your zero true and avoid marring the slide.
Key Specifications
- Manufacturer: Trijicon
- Manufacturer Part Number: GL243-C-601143
- Model: Suppressor/Optic Height
- UPC: 719307620698
- Fits: Glock 42, 43, 43X, 43E, 48
- Sight Type: Three-Dot Tritium Night Sights
- Front Lamp Color: Green Tritium
- Rear Lamp Color: Green Tritium
- Front Outline Color: Yellow
- Rear Outline Color: Black
- Rear Notch Style: Square
- Front Blade Width: 0.144 in. (3.65mm)
- Overall Front Blade Height: 0.503 in. (12.77mm)
- Overall Rear Height: 0.554 in. (14.07mm)
- Body Material / Finish: Steel, Black
- Warranty: 12-Year Tritium Lamp Warranty
What’s Included
- Front night sight (green tritium, yellow outline)
- Rear night sight (green tritium, black outline, square notch)
Frequently Asked Questions
Will these Trijicon suppressor height sights co-witness with my red dot?
Yes, that's a big part of the design. They stand tall enough to serve as backup iron sights alongside a pistol-mounted optic, and Trijicon built them to work with the RMRcc mounting plate on slim-frame Glocks. You get a usable sight picture whether your dot is on or off.
Do these night sights need batteries to glow?
No. The illumination comes from self-powered tritium lamps, so there are no batteries to swap and nothing to charge. The green lamps are warranted to glow for 12 years from the date of manufacture.
Which Glocks do these fit?
They're cut for the slim-frame lineup, covering the Glock 42, 43, 43X, 43E, and 48. If you're running one of those with a suppressor or an optic, these are built for that setup.
Can I install these Trijicon sights myself?
Trijicon recommends professional installation. These press on to spec and require a sight pusher to seat correctly without damaging the slide, so a gunsmith is the safe route to keep your zero and finish intact.





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