Description
The Trijicon HD Night Sights Glock 17 19 set is Trijicon’s standard height HD sight pair for Glock pistols, with a yellow ringed front blade and a blacked out rear. It fits the 17, 17L, 19, 22 through 28, 31 through 35, 37 through 39 and the 45, excluding MOS models. Both lamps are green tritium, so the sights work in the dark with no batteries involved.
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The Yellow Ring Is Doing Real Work
The front blade carries a tritium lamp ringed in yellow photoluminescent paint. In daylight that ring is what your eye finds, not the tritium. The colour was chosen because it separates cleanly from almost every background a shooter encounters, from dark clothing to a lit range berm to a shadowed hallway.
The rear blade is outlined in black. Nothing on the rear sight competes for attention, so the eye goes to the front and stays there. That is the core idea behind the Trijicon HD Night Sights Glock 17 19 design, and it is why the set feels faster than a conventional three white dot arrangement for most shooters.
A Wide U Notch Instead Of A Square One
The rear notch is a U shape measuring one hundred and sixty nine thousandths of an inch across, against a front blade of one hundred and forty four thousandths. That gives you a generous twenty five thousandths of daylight split between the two sides, which is a fast, forgiving sight picture.
The rounded bottom of a U notch also cradles the front blade rather than fighting it, so the eye settles into alignment quicker than it does in a tight square notch. If your shooting is close and under time pressure, that is the trade the Trijicon HD Night Sights Glock 17 19 set makes on your behalf.
A Rear Sight You Can Rack The Slide On
The front face of the rear blade is steeply hooked. That shelf lets you catch the rear sight on a belt, a holster mouth, a boot heel or a door frame and cycle the slide one handed. It is a feature you hope never to need and are very glad to have if a hand is occupied or injured.
Both lamps on the Trijicon HD Night Sights Glock 17 19 set glow green. Tritium is self powered, so there is no battery, no switch and no need to charge the sights under a flashlight before they will work. Trijicon seals each lamp in an aluminium cylinder inside silicone rubber and caps it with a sapphire jewel that spreads the light and shields the lamp from solvents.
Trijicon HD Night Sights Glock 17 19 Specifications
- Fits: Glock 17, 17L, 19, 22, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 37, 38, 39 and 45
- Does Not Fit: Glock MOS models
- Front Lamp Color: Green tritium
- Rear Lamp Color: Green tritium
- Front Paint Color: Yellow
- Rear Paint Color: Black
- Front Blade Width: 0.144 in. (3.65mm)
- Front Blade Height: 0.215 in. (5.46mm)
- Overall Front Blade Height: 0.268 in. (6.8mm)
- Rear Notch Style: U-notch
- Rear Notch Width: 0.169 in. (4.29mm)
- Rear Blade Height: 0.231 in. (5.86mm)
- Overall Rear Height: 0.321 in. (8.15mm)
- Manufacturer Part Number: GL101Y
Standard Height, Not Suppressor Height
Overall front blade height here is two hundred and sixty eight thousandths of an inch. That is factory height, which means these sights sit where Glock intended and will not clear a suppressor or co witness through a red dot mounted in a slide cut.
If you run a can or an optic, buy the suppressor height version instead. If your pistol wears iron sights only, the Trijicon HD Night Sights Glock 17 19 set is the right height and keeps the gun in every standard holster without modification. Getting this choice wrong is the most common mistake people make ordering pistol sights.
Why Shooters Choose The Trijicon HD Night Sights Glock 17 19 Set
- Yellow photoluminescent front ring for fast daylight pickup
- Blacked out rear so nothing competes with the front sight
- Wide U-notch for a fast, forgiving sight picture
- Hooked rear blade for one handed slide manipulation
- Green tritium front and rear with no batteries to change
- Covers nearly the whole standard frame Glock lineup in one part number
HD Versus HD XR
Trijicon builds a second version of this sight called the HD XR. The XR narrows the front blade and tightens the notch to give a more precise picture at distance, at the cost of a little speed up close. The Trijicon HD Night Sights Glock 17 19 set stays with the wider blade and the wider U-notch, which favours speed.
Neither is objectively better. Pick by the distance you actually shoot. A duty or home defence pistol that lives at across the room distances is better served by this set. A competition or field pistol asked to hit at twenty five yards and beyond is better served by the XR.
Installation And Fit
The rear dovetail wants a sight pusher, and the front sight is a hex nut torqued from inside the slide with thread locker. MOS models are excluded from the fit list, so check your slide before ordering. If you do not own the tools, a gunsmith will fit the Trijicon HD Night Sights Glock 17 19 set in minutes for less than a scarred slide costs to refinish.
If you are comparing sight options, browse the rest of our optics and sights and read the manufacturer specification page for the full fit list and the orange front alternative.
MAG5 Firearms is a family owned FFL dealer in Collegeville, Pennsylvania. Every Trijicon HD Night Sights Glock 17 19 set we list is a genuine Trijicon item sourced through authorized channels and covered by the manufacturer warranty. If you are unsure which height or front colour suits your pistol, reach out before you order and we will give you an honest answer.
Ordering The Trijicon HD Night Sights Glock 17 19 Set
The Trijicon HD Night Sights Glock 17 19 set ships as a matched front and rear pair under one part number, so nothing else needs to go in the basket with it. Sights are not returnable once installed, which is the practical reason to settle the height question and the front colour before a pusher touches the dovetail.




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