AmeriGlo Optic Compatible 3XL Tall Sight Set for Glock – Green Tritium Black Outline Front & Black Rear, .365" Front / .451" Rear (GL811)
Upgrade your Glock for maximum optic compatibility and unmatched low-light performance with the AmeriGlo GL811 Optic Compatible 3XL Tall Sight Set. Designed to fit all Glock models, this ultra-tall sight configuration is perfect for shooters running slide-mounted red-dot optics or suppressors. Featuring a Green Tritium front sight with a blacked-out outline and a durable black rear sight, the GL811 delivers a clean, glare-free sight picture optimized for both defensive and tactical applications.
Engineered for precision, durability, and reliable co-witness alignment, this sight set is ideal for modern EDC pistols, duty weapons, and competition-ready Glock builds that require dependable backup iron sights—even with the tallest optics.
3XL Extra-Tall Height – Maximum Co-Witness for Red-Dot Optics & Suppressors
The AmeriGlo GL811 uses a 3XL height profile, one of the tallest configurations available, ensuring superior visibility through or above:
Enclosed-emitter optics (Holosun 509T, Aimpoint ACRO, etc.)
Open-emitter red dots (Trijicon RMR/SRO, Holosun 507C, Leupold DeltaPoint Pro)
Factory MOS slides and aftermarket optic-cut slides
Pistol suppressors and threaded barrels
Why Shooters Choose 3XL Height Sights:
Full or lower-third co-witness with most red dots
Clear visibility over large optic housings
Acts as a reliable backup sighting system
Ideal for tactical, duty, and competition setups
When your optic fails or becomes obstructed, your irons stay fully usable.
Green Tritium Black Outline Front Sight – Low-Light Dominance, Daylight Precision
The GL811 front sight features a Green Tritium lamp surrounded by a matte Black outline, offering a clean, high-contrast focal point without the brightness of colored outlines.
Front Sight Benefits:
Continuous glow in darkness thanks to Tritium illumination
Black outline enhances contrast in bright daylight
Perfect for shooters who prefer a more subdued sight picture
Precise .365" front-sight height for true 3XL alignment
This design delivers a professional, no-nonsense sight picture suitable for tactical shooters and duty professionals.
All-Black Rear Sight – Crisp, Glare-Free Alignment
The rear sight is crafted in a solid black serrated finish, purpose-built to eliminate glare and visual distractions. This keeps the shooter’s attention centered on the Tritium front sight for faster alignment.
Rear Sight Advantages:
Serrated rear surface reduces glare
Blacked-out design provides a clean sight picture
Precision-cut notch for accuracy
.451" height pairs perfectly with the 3XL front
This rear sight is ideal for rapid target transitions and consistent accuracy under real-world conditions.
Fits ALL Glock Models – Broadest Possible Compatibility
The AmeriGlo GL811 is compatible with every Glock model, including:
Glock 17, 19, 19X, 20, 21
Glock 22, 23, 24, 26, 27
Glock 29, 30, 31, 32, 33
Glock 34, 35, 40, 41
Slimline models: Glock 42, 43, 43X, 48
Works with both MOS and non-MOS slides.
Final co-witness position depends on optic type and mount height.
Hardened Steel Construction – Trusted by Professionals
AmeriGlo sights are widely used by law enforcement, military units, and professional shooters due to their proven strength and reliability.
Durability Features:
Hardened steel structure withstands heavy recoil
Corrosion-resistant finish for harsh environments
Snag-resistant contours ideal for concealed carry and duty holsters
Engineered to hold zero under extreme use
These sights are built for real-world performance, not just the range.
Perfect for Duty Pistols, EDC, Tactical Use & Competition
The GL811 is engineered for shooters who demand high-performance iron sights on an optic-equipped Glock.
Ideal for:
Concealed carry
Duty and law-enforcement pistols
Tactical training environments
Competition shooting (USPSA, IDPA)
Home defense firearms
Suppressor-equipped pistols
Fully customized optic-ready Glock builds
Whether you’re a professional or a serious enthusiast, the GL811 enhances speed, accuracy, and confidence.
Product Specifications
Brand: AmeriGlo
Model: Optic Compatible 3XL Tall Sight Set
Part Number: GL811
UPC: 644406911463
Front Sight: Green Tritium with Black Outline
Rear Sight: Black Serrated Steel
Front Height: .365"
Rear Height: .451"
Construction: Hardened Steel
Compatibility: Fits ALL Glock models
Purpose: Co-witnessing with optics, suppressor-height use, day/night visibility
The Ultimate Optic-Ready Sight Upgrade for Glock Pistols
The AmeriGlo GL811 Optic Compatible 3XL Tall Sight Set offers the height, visibility, and durability required for modern red-dot-equipped Glock platforms. From optics co-witnessing to suppressor use, this sight set ensures your backup irons remain fully functional and easy to acquire in any lighting environment.
Boost your Glock’s capability with AmeriGlo—where strength, clarity, and precision come together.
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