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Factory sights on the H&K USP Compact get the job done, but they leave a lot of speed and low-light performance on the table. The Trijicon HD Night Sight set, model HK108Y, fixes that with a design tuned for how people really run a pistol when things get fast or dark. It pairs a tall front blade wrapped in a glowing yellow photoluminescent outline with a clean, blacked-out U-notch rear, so your eye snaps to the front sight instead of getting lost hunting for it.
This is a full three-dot green tritium setup. Each lamp is sealed inside a protective aluminum cylinder, cushioned with silicone rubber to shrug off recoil and hard use, and capped with a sapphire jewel that spreads the light evenly and shields the tritium from solvents and punctures. The green front dot is bright and easy for the eye to grab, and because tritium is self-powered, it keeps glowing with no batteries and no charging required.
The wide U-shaped rear notch opens up your view of that front blade for quicker alignment, and the front face of the rear sight is steeply hooked so you can rack the slide one-handed against a belt or boot heel in a pinch. That glowing yellow outline is a standout in transitional light, the tricky in-between conditions where a lot of standard sights disappear. It draws your eye during the day and helps you line things up when the sun drops.
The HK108Y is cut specifically for H&K USP Compact models, so you get a proper fit without guesswork. The green tritium lamps carry a 12-year warranty from the date of manufacture, which is about as long as it gets in the night sight world. A qualified gunsmith or sight pusher is the way to go for installation to keep everything lined up and drifting true.
Yes, the HK108Y set is cut specifically for the H&K USP Compact, so it matches the factory dovetails on those models. It is not designed for the full-size USP or other H&K pistols, which have their own dedicated Trijicon fits. If you have a USP Compact, this is the correct set.
No. The glowing green dots run on tritium, a self-luminous gas that produces light without any batteries or charging. The yellow front outline is photoluminescent, meaning it absorbs ambient light and glows for added daytime contrast. Together they keep you on target in bright light, low light, and total darkness.
Trijicon warranties the green tritium lamps for 12 years from the date of manufacture. Tritium naturally dims over time as part of how the gas works, but you get more than a decade of dependable glow before it fades below useful brightness. It is one of the longer coverage periods offered on night sights.
You can if you have a proper sight pusher and know your way around a slide, but professional installation is recommended to keep everything aligned and avoid damaging the sights. A gunsmith can drift the rear for windage and confirm your point of impact. Going that route also helps protect the sealed tritium lamps during the swap.
| UPC | 719307210622 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | HK108Y-600598 |
| Color | Yellow Front |
| Model | |
| Product Type | Sight |
| Shipping Weight | 0.1125 |
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