Brownells 3Xl-Tall Black Sight Set Serrated .365''F/.451''R For Glock

The Brownells 3XL-Tall Black Sight Set is a serrated iron sight pair engineered for Glock pistols running larger red dot optics. These sights ship with a .365" front and .451" rear height — the tallest option in Brownells' lineup — designed to co-witness with closed-emitter dots like the Holosun 407C/507C/508T, Trijicon RMR, and similar mid-sized carry optics. If you've mounted a dot to your Glock and want irons that sit properly in your sight picture without obstruction, this height is your answer.

The matte black finish on both front and rear sights cuts glare without sacrificing visibility. The front sight is serrated to reduce light reflection and improve definition, while the rear sight features the same serrated treatment along with a U-notch cut that lets you quickly and intuitively align the front sight post. That straightforward U-notch geometry means faster target acquisition whether you're running the gun at the range or in a defensive role.

Brownells engineered these sights for their own slide platform, but they're fully compatible with any standard Glock using factory sight cuts — Gen 3, Gen 4, and Gen 5 models all take them without modification. The 3XL height makes them the go-to choice if you're running a full-size red dot and want your backup irons to coexist properly in your sight stack. Simple, robust, and built to work.

Key Features

• 3XL height (.365" front / .451" rear) for red dot co-witness on full-size optics
• Serrated front and rear sights reduce glare and improve target visibility
• U-notch rear sight for fast, intuitive front sight alignment
• Matte black finish for a low-profile appearance
• Compatible with standard Glock sight cuts on all generations

Specifications

Frequently Asked Questions

Will these sights work on my Glock if I have a red dot mounted?

Yes. The 3XL height (.365" front / .451" rear) is specifically designed to co-witness with larger closed-emitter red dots like the Holosun 407C, 507C, 508T, Trijicon RMR, and similar optics. Your backup irons will sit at the proper sight plane.

What Glock models are compatible?

These sights work with Glock Gen 3, Gen 4, and Gen 5 pistols that use standard Glock sight cuts. Brownells engineered them for their own slides, but they are fully compatible with factory Glock slides as well.

What's the difference between the 3XL and other Brownells sight heights?

Brownells offers multiple height options to match different red dot sizes. The 3XL is the tallest, optimized for full-size optics. The 1L and XL are shorter heights designed for smaller dots and different co-witness scenarios.

Are the front and rear sights both serrated?

Yes. Both the front and rear sights feature serrations to reduce glare and improve sight definition. The rear sight also has a U-notch cut for faster sight alignment.