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The Costa Ludus set takes a different approach than your typical three-dot night sights. Up front you get Night Fision's proprietary Perfect Dot in green tritium wrapped in a bright orange ring, and the rear runs a horizontal green tritium bar instead of two dots. That front-dot-over-rear-bar layout gives your eye an obvious point of reference, so lining up front and rear in the dark happens quick without any second-guessing about which glowing dot is which.
These came together with input from firearms instructor Chris Costa, drawing on his time in the U.S. Coast Guard and years of teaching real-world shooting. A few details reflect that hands-on background. Both the front and rear faces are serrated to cut glare in bright light, and the front edge of the rear sight is serrated too, giving you a positive surface to hook on a belt or boot heel for one-handed slide manipulation if you ever need it. The rear notch is also cut wider to open up the target picture for faster acquisition under pressure.
Night Fision machines these from steel and finishes them in black nitride for solid wear and corrosion resistance. The tritium vials sit inside a patented injection-molded sleeve using ballistic materials, which locks the glow in place and holds up to recoil round after round. The vials use Swiss tritium and a domed lens that focuses the glow into a crisp, defined dot. Night Fision backs the whole set with a lengthy warranty, so the tritium's staying power isn't something you have to wonder about.
This set fits a wide range of Glock models including the 17, 17L, 19, 22 through 28, 31 through 35, 37 through 39, and MOS variants. The shorter blade height is built for a low-profile co-witness, making these a smart pick if you're running a mini red dot like a Holosun C-series or Trijicon RMR Type 2. Front sight width runs .140 inch, front height .299 inch, and rear height .330 inch. Measure your optic window before ordering so you know exactly where the irons land.
Yes, the shorter blade height on these is designed for a low-profile co-witness with a mini red dot. Night Fision recommends them for optics like the Holosun C-series or Trijicon RMR Type 2. Since optic housing heights vary, compare the front sight height of .299 inch against your optic window before installing so you know where the irons fall.
Instead of three glowing dots, you get a single green tritium Perfect Dot up front with an orange ring, and a horizontal green tritium bar in the rear. Your eye picks up the dot-over-bar layout fast in low light without confusing the front and rear references. It's a distinctive picture built specifically for quick target acquisition.
Yes, this set covers MOS variants along with the standard Glock 17, 17L, 19, and a long list of other models. If you're running an MOS slide with an optic, that's actually where the low co-witness height shines. Just double-check your specific optic and mounting setup for clearance.
These use Swiss tritium sealed inside a patented injection-molded sleeve, and Night Fision backs the set with a lengthy warranty on the glow. Tritium naturally dims very gradually over many years, but you'll get plenty of reliable low-light use out of them. The domed lens keeps the glow crisp and focused the whole time.
| UPC | 810116036172 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | GLK001010OGXG |
| Style | Square |
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