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The Trijicon HD Night Sights in HK106Y trim are purpose-built for the H&K USP, giving one of the most trusted duty pistols ever made a serious low-light upgrade. The front sight uses a taller blade with a yellow photoluminescent paint ring around a green tritium lamp, so your eye snaps to the front post whether you're standing in bright daylight or complete darkness. The rear sight skips the paint outline and instead uses a wide U-shaped notch, which frames that glowing front dot cleanly and keeps clutter out of your sight picture.
The magic here is the pairing of two light sources. Green tritium lamps glow on their own with no batteries or charging, while the photoluminescent front ring soaks up ambient light and keeps glowing during those transitional moments when tritium alone might not be enough. Grab it with a flashlight beam for a second or step from a bright room into a dark one, and that front dot really lights up. The tritium lamps are sealed in aluminum cylinders with silicone cushioning and capped with a sapphire jewel, which spreads the light evenly and shrugs off recoil and cleaning solvents.
This set is cut specifically for the H&K USP dovetails, so you get proper fitment and correct three-dot alignment without the headaches that come from forcing a generic sight onto the platform. The front face of the rear sight is steeply hooked, which lets you rack the slide one-handed against a belt or boot heel in an emergency. That's a detail carry and duty folks appreciate the first time they need it.
Trijicon backs the green tritium lamps for 12 years from the date of manufacture, so you're looking at over a decade of dependable glow. Between the tall front blade, the wide rear notch, and the dual-illumination front dot, this is a proven setup for anyone who wants faster sight acquisition on their USP when the sun goes down. Professional installation with a sight pusher is recommended to seat everything correctly and keep the lamps intact.
Yes, this set is cut specifically for the full-size H&K USP and its dovetails. If you have a USP Compact, you'll want the HK108 version instead, since the Compact uses a different fitment. Matching the sight to the exact model gives you proper three-dot alignment right out of the box.
The color of the photoluminescent ring around the front tritium lamp is the only difference. Yellow tends to read a little warmer and softer to some eyes, while orange pops with more contrast for others. Both use the same green tritium lamp and perform identically in the dark, so it really comes down to which color your eye catches faster.
Trijicon warrants the green tritium lamps for 12 years from the date of manufacture. The glow gradually dims over that span rather than shutting off suddenly, and even after it fades the sights still work fine as standard irons. The photoluminescent front ring also helps by holding a charge from ambient light.
Professional installation with a sight pusher is recommended. The dovetails are a tight fit and the tritium lamps can be damaged if you try to drift them with a punch and hammer. A gunsmith or anyone with proper pusher tooling can seat them safely and confirm your zero.
| UPC | 719307210608 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | HK106Y |
| Length | 7.1 |
| Package Height | 0.9 |
| Package Width | 5.2 |
| Product Type | Accessory-Lasers and Sights |
| Shipping Weight | 0.12 |
| Sights | Yellow Front & Black Rear |
| Style | 3-Dot |
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