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The Trijicon HD Night Sight Set (SG101O) is one of the most popular front-sight-focus upgrades out there, and it earns that reputation. The front sight uses a taller blade with an aiming point ringed in glow-in-the-dark orange photoluminescent paint, so your eye snaps to it immediately. The rear sight stays deliberately plain, outlined in black with a wide U-shaped notch that frames the front dot instead of competing with it. It's a simple idea that works, and it's why so many folks put these on gun after gun once they try a set.
All three dots run green tritium, so this is a true no-light night sight, not just a bright daytime setup. The tritium lamps sit inside protective aluminum cylinders with silicone rubber cushioning to shrug off recoil and cleaning solvents, and each lamp is capped with a sapphire jewel that spreads the light evenly and adds a layer of protection. In practice, the orange front outline soaks up ambient light and even glows on its own for a bit after you hit it with a flashlight, then the tritium takes over when it's truly dark. The matte finish keeps glare down so you're not fighting reflections in bright sun.
This set is cut for Sig Sauer pistols calibrated for 9mm and .357 SIG that come standard with a #8 front and #8 rear, including the P225, P226, P228, P239, and P320. It does not fit the P938 or P365, so those need a different configuration. The rear sight has a steeply hooked front edge that lets you rack the slide one-handed against a belt or holster in a pinch, which is a genuinely useful touch on a carry or duty gun.
Tolerances on these are tight, so a proper sight pusher makes install a lot smoother, and many people hand the job to a gunsmith. Once they're on, target acquisition speeds up noticeably. The green tritium lamps carry a 12-year warranty from date of manufacture.
This set fits Sig Sauer pistols calibrated for 9mm and .357 SIG that ship with a #8 front and #8 rear, including the P225, P226, P228, P239, and P320. It does not fit the P938 or P365, which need a #6 front and #8 rear configuration. If you're unsure what your slide is cut for, check your factory sight height before ordering.
Yes. All three dots use green tritium, so the front and both rear dots glow on their own in complete darkness with no batteries or charging needed. On top of that, the orange front outline is photoluminescent paint that also picks up ambient light for extra daytime and low-light visibility.
The bright orange front outline is designed to grab your eye instantly, while the subdued black rear with its wide U-notch stays out of the way and frames that front dot. This front-sight-focus setup helps you line up faster and is a big reason people report quicker target acquisition with these sights.
It's possible if you have the right tools, but the tolerances on these are tight and Trijicon recommends professional installation. A quality sight pusher makes the job much easier, and many people have a gunsmith press them on to avoid damaging the sights or the slide.
| UPC | 719307209657 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | SG101O |
| Color | Orange Outline |
| Length | 7.1 |
| Model | |
| Package Height | 0.7 |
| Package Width | 5.1 |
| Product Type | Accessory-Lasers and Sights |
| Shipping Weight | 0.1 |
| Sights | Orange Front & Black Rear |
| Style | U-Notch |
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