Ameriglo Xl Opt Comp Sights Trit/Black Ol .315''F/.394''R For Glock

If you've mounted a slide-mounted red dot on your Glock MOS and want a rock-solid backup sight that actually co-witnesses through your optic window, the AmeriGlo XL Optic Compatible Sights are built for that job. These tritium front and black rear sights are sized specifically for Glock Gen4 and Gen5 MOS slides—they sit at the right height to give you a usable sight picture when looking through optics like the Aimpoint Acro, Holosun 509T, or Steiner MPS, and they're tall enough to serve as genuine backups if your dot ever goes dark.

The front sight features green tritium with an orange or lumigreen outline (your choice), which means you'll pick it up fast in low light or if you need to transition off glass fast. The rear is flat black with a square notch—clean, purposeful, and built to last. Both sights come case hardened, so they're ready for duty carry or the range. The XL profile is specifically engineered for MOS slides, so there's no guessing about fit—it either works for your platform or it doesn't, and for MOS guns, it does.

These aren't compromise sights or a second thought. They're the sights you put on a Glock-mounted optic when you actually want backup iron sights that work. Whether you're running a duty gun, a competition build, or a carry setup with redundancy in mind, AmeriGlo's XL Optic Compatible Sights give you a predictable, elevated sight picture that doesn't interfere with your primary optic.

Key Features

• Elevated co-witness height designed to work through red dot optic windows on Glock MOS slides
• Green tritium front sight with orange or lumigreen outline for low-light acquisition
• Flat black rear sight with square notch for fast target alignment
• Case hardened construction for durability and reliability
• Compatible with Aimpoint Acro, Holosun 509T, and Steiner MPS optics
• XL height profile optimized for Glock Gen4 and Gen5 MOS platforms

Specifications

Frequently Asked Questions

Will these sights work with my Glock MOS and a red dot optic?

Yes. These AmeriGlo XL sights are specifically designed for Glock MOS slides and are sized to provide an elevated co-witness sight picture when you look through your mounted red dot. They're compatible with Aimpoint Acro, Holosun 509T, and Steiner MPS optics, and they allow you to see your sights through the optic window.

Are these backup sights or primary sights?

They serve as backup sights. Their elevated height is optimized for co-witnessing with slide-mounted red dots, so they're designed to be used as a secondary aiming reference if your primary optic fails or goes offline.

What's the difference between the XL and other AmeriGlo size options?

AmeriGlo offers multiple heights (1L, 2L, 5L, XL, 2XL, 3XL, 5XL) to match different optic platforms and mounting heights. The XL is the standard for Glock MOS slides used with popular modern micro red dots. Check your specific optic and slide setup to ensure XL is the right fit for your application.

Do these sights come with tritium in both front and rear?

No. The front sight features green tritium with your choice of orange, lumigreen, or black outline. The rear sight is flat black with no tritium—this is intentional design for a clean, uncluttered sight picture when using your optic.