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Anyone running an H&K USP Compact knows the factory sights leave plenty of room for an upgrade, and the Trijicon HD set is one of the most popular ways to fix that. This is the orange front variant (part number HK108O), built around a three-dot green tritium arrangement with a tall front blade ringed in bright orange photoluminescent paint. The result is a sight picture your eye locks onto quickly in daylight, and glowing dots that stay visible when the lights go out.
The front blade sits taller than stock and carries a green tritium lamp capped with a sapphire jewel, which spreads the glow evenly and shields the lamp from recoil and cleaning solvents. That orange ring around the dot is the daytime workhorse, giving you a high-contrast aiming point without needing any charge or batteries. Green tritium was chosen for the lamps because it holds up better against muzzle flash and is the easiest color for the human eye to grab in any light.
The rear sight keeps things clean with a black outline and a wider U-shaped notch, so nothing competes with the front dot for your attention. It also features a steeply hooked front face, which gives you something to catch on a belt or boot heel for one-handed slide manipulation if you ever need it. Between the two, front-sight acquisition stays fast whether you're on a bright range or working in transitional light.
These are machined to fit H&K USP Compact models, with a front blade height of 0.198 inches and a rear blade height of 0.185 inches. Trijicon backs the green tritium lamps with a 12-year warranty from the date of manufacture, and like the rest of the lineup, this set is designed to shrug off hard use. Pistol sights like these call for a proper sight pusher and press, so plan on having a gunsmith or someone with the right tools handle the install to keep everything dialed in.
Yes, this set is machined specifically for H&K USP Compact models. It's not made for the full-size USP or other H&K pistols, so double-check that your slide is the Compact variant before ordering. Trijicon offers separate cuts for platforms like the P2000, P30, and VP9.
The only difference is the color of the photoluminescent paint ring around the front dot. This is the orange front, which many find pops fast against most backgrounds in daylight. Both share the same green tritium lamps and identical dimensions, so it comes down to which color your eye prefers.
No. The green tritium lamps self-illuminate around the clock without any batteries or exposure to light. The orange paint ring does charge up in daylight for extra contrast, but the tritium keeps glowing on its own for years.
Pistol sights like these are pressed into dovetails and really call for a proper sight pusher or press to seat correctly. Unless you have that equipment and some experience, it's worth having a gunsmith handle the swap so you don't mar the slide or damage the sight. A pro install also makes it easy to confirm your point of aim once they're on.
| UPC | 719307210615 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | HK108O-600597 |
| Color | Orange Front |
| Model | |
| Product Type | Sight |
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