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The AmeriGlo GL351 Protector set is built around one simple idea: get your eye to the front sight fast and keep it there. The front post carries a green tritium lamp wrapped in a bright orange ProGlo outline, so it grabs your focus in daylight and glows through the dark when the lights go out. Behind it sits a black, serrated U-notch rear that stays out of the picture, which is exactly what you want when you're trying to drive the gun quickly.
This set is made for the slim Glock lineup, fitting the 42, 43, 43X and 48, and it works with the MOS slides too. If you carry a red dot on your 43X or 48, these co-witness nicely and give you a reliable backup when you want to run irons. The rear sight's serrations do more than cut glare. That flat, textured surface gives you something to hook on a belt or holster edge for one-handed slide manipulations, which is a real advantage on a small carry gun.
The front blade measures .140 inches wide with a .165 inch rear notch, a proportion that leaves a clean sliver of light on either side of the post for quick, precise alignment. Both sights are steel, so they hold up to hard use and repeated carry without the wear you'd see on plastic factory sights. The single tritium dot up front keeps the sight picture uncluttered, which a lot of folks prefer over a busy three-dot layout for defensive shooting.
Installation is straightforward for anyone comfortable with a sight pusher and a front sight tool, though a local gunsmith can knock it out in a few minutes if you'd rather leave it to a pro. The orange outline is the standout feature here, giving you a warm, high-contrast reference that pops against most backgrounds without washing out. Between the tritium glow, the durable steel build, and that fast front sight design, the GL351 is a solid upgrade for anyone who carries a compact Glock for defense.
Yes, this set fits the Glock 42, 43, 43X and 48, and it is confirmed to work with MOS slides. Owners running a red dot on the 43X and 48 report these sights co-witness with compact optics like the RMSc, giving you a backup sight picture when you want it.
The GL351 uses a single green tritium dot up front surrounded by an orange ProGlo outline, paired with a plain black serrated rear. This blacked-out rear design pulls your focus straight to the front sight rather than splitting your attention across multiple dots, which many people prefer for fast defensive shooting.
The sights are steel and install like standard Glock replacement sights, so you'll want a sight pusher for the rear and a front sight tool for the front screw. If you're not set up for it, most gunsmiths can swap them in just a few minutes.
The orange ProGlo outline is a paint-based ring that boosts daytime visibility and contrast, while the green tritium lamp in the center provides the actual glow in low light and darkness. Together they give you a strong aim point in nearly any lighting condition.
| UPC | 644406904687 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | GL351 |
| Model | |
| Product Type | Tritium Front/Rear |
| Style | Protector |
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