Free Shipping | 99% of all stands ship within 24 hours
We appreciate you sharing this:
We appreciate you sharing this:
Categories:
If you run a Sig Sauer P320, upgrading to a quality set of night sights is one of the most practical improvements you can make for confident aiming in dim hallways, parking lots, indoor ranges, and “in-between” lighting where silhouettes and shadows hide your front sight. The best sets don’t just glow at midnight—they stay fast to pick up in daylight, resist snagging, and hold zero through thousands of rounds.
In this guide, you’ll find the best night-sight options for the P320, how to choose the right height and configuration (especially if your P320 is optics-ready), and what to look for so you don’t waste money on the wrong fitment.
The P320 is popular for a reason: modular grip options, strong aftermarket support, and a familiar sight picture for many shooters. But the factory sight setup on many P320 variants can range from “fine in bright light” to “hard to see when it counts.” Night sights solve a specific, realistic problem: your eyes struggle to find the front sight when the environment is dim or your target area is poorly lit.
Quality night sights use self-illuminated tritium vials (no batteries) to create visible reference points. The best sets balance three things:
Not all “Sig” sights fit all “Sig” pistols the same way. The P320 family includes multiple slide configurations (full-size, compact, carry, subcompact, X-series, Legion, optics-ready slides, and more). That means you should confirm:
Optics-ready note: If you run a reflex optic on your P320, “standard height” night sights may be too short to see through the window. In that case, you’ll typically want an optics-ready height (often described as lower-1/3 or absolute co-witness). This is where brand-specific fit guides are extremely helpful.
Helpful link: Night Fision’s co-witness finder for Sig Sauer can help you pick the right height for your optic setup.
If you want a proven duty-grade setup with a very bold front sight, Trijicon’s HD XR line is a top-tier choice. The HD XR front typically gives you a bright outline for daytime with a tritium center for night work, paired with a rear designed to be quick and not overly “busy.”
Why people choose it:
Where to check fitment: Trijicon HD XR for Sig Sauer pistols
If you like the idea of staying “in the Sig ecosystem,” X-RAY3 sights are a clean upgrade path. They’re designed to be bright and high-contrast in daylight and still provide tritium illumination in low light. Many shooters appreciate the straightforward, modern sight picture—especially if they want a factory-like feel with improved visibility.
Why people choose it:
Product link: SIG SAUER X-RAY3 Day/Night Sights
AmeriGlo’s i-Dot system uses a dot-over-dot sight picture that many shooters find intuitive: stack the dots vertically and press. It’s a practical approach if you want something that feels less cluttered than a traditional three-dot setup.
Why people choose it:
Product link: AmeriGlo i-Dot Night Sights for Sig Sauer pistols
Night Fision is popular because they offer lots of configuration choices (front ring colors, heights, and optics-ready options). If you’re trying to match a specific use case—standard carry, taller sights for an optic window, or a particular front color—this brand is worth a hard look.
Why people choose it:
Start here: Night Fision tritium sights for Sig Sauer
Meprolight has long been known for tritium sights, and the Tru-Dot line is a classic three-dot system. If you want something familiar and proven, it’s hard to argue with. If you want a bolder daytime presence, Mepro Hyper-Bright is positioned as a high-visibility option designed to stand out across lighting conditions.
Why people choose it:
Product links: Mepro Hyper-Bright | Meprolight Tru-Dot sight set (Sig P320 listing example)
If you want a sight that really pops in daylight, a tritium + fiber optic hybrid can be compelling. TRUGLO’s TFX Pro line is designed to combine bright daytime visibility with tritium performance at night. This style is a favorite for shooters who prioritize fast pickup in bright light but still want a true night capability.
Why people choose it:
Product link: TRUGLO TFX Pro
XS R3D-style sets are often chosen for their high-contrast front sight and a rear that’s meant to be quick and functional. If you like a bold front and prefer not to have an overly bright rear, XS is a strong contender.
Why people choose it:
Product link: XS Sights R3D 2.0 Night Sights
If your P320 has a mounted optic (or you plan to add one), buy sights specifically intended to co-witness. Brands like Night Fision offer guides to help match a sight height to a specific optic footprint and co-witness preference.
Some shooters pick orange for “daylight pop.” Others prefer green because it appears brightest to the human eye in many conditions. If you can, try to look through a friend’s setup or handle options at a shop before committing.
Look for rounded edges, strong housings, and a rear sight face that won’t shred cover garments or snag constantly during daily carry. Great sights should feel “smooth” around the edges without sacrificing a crisp notch.
Many night sights for the P320 are installed via dovetails and are best installed with the correct tools (or by a qualified gunsmith) to avoid marring the slide or damaging the sights. After installation, confirm your point of impact at the range with your preferred ammo and distance. Small differences in sight height or notch geometry can shift impact slightly.
Tip: If you’re switching from standard-height irons to taller co-witness sights, expect a different sight picture. Give yourself a few sessions to adapt before judging the change.
Yes. In daylight, you’re mostly seeing the front outline/ring and the overall sight shape. Tritium is most helpful in dim light and darkness.
Tritium lamps gradually dim over time. Many owners consider replacement around the 10–12 year mark depending on brightness preference and usage.
Not unless you specifically need extra height—most commonly for co-witnessing with an optic window or specialized setups. Otherwise, standard-height sights are typically ideal.
Three-dot is familiar and widely used. i-Dot can feel simpler under speed because you’re stacking two dots instead of managing three glowing points. The “better” choice is the one you see fastest and shoot most accurately.
If you want the safest “buy once, cry once” choice, Trijicon HD XR is hard to beat. If you want a factory-style upgrade, go SIG X-RAY3. If you’re tuning a specific setup—especially optics-ready—use Night Fision’s co-witness tools to land the correct height. And if you love a bright daytime sight picture with true low-light capability, TRUGLO TFX Pro and Mepro Hyper-Bright are worth a look.
Whichever direction you go, confirm fitment for your exact P320 variant before ordering, then validate at the range so your sights match your eyes, your grip, and your real-world distances.
