AmeriGlo Classic Tritium Sight Set for Glock – Green Front / Yellow Rear, GL431
Upgrade your carry Glock with the AmeriGlo Classic Tritium Sight Set for Glock GL431 (UPC 644406908760) and get a true, all-conditions sight picture you can trust day or night. Designed specifically for the Glock 42, 43, 43X, and 48 (including MOS variants), this 3-dot night sight set features a green Tritium front sight with white outline and a yellow Tritium rear sight with white outlines, giving you fast front-sight focus and an easy-to-read contrast between front and rear dots. EuroOptic+4ameriglo.com+4blackstoneshooting.com+4
Whether you carry your Glock for concealed carry, home defense, off-duty use, or range training, the AmeriGlo GL431 delivers a classic, proven night sight solution built on a durable steel frame and Swiss Tritium lamps.
Key Features – AmeriGlo GL431 Classic Tritium Sights
Classic 3-Dot Tritium Design with High-Contrast Colors
The AmeriGlo Classic Tritium line is built around the original, battle-proven 3-dot night sight system that has been trusted by personal defense shooters, law enforcement, and military users for years. RK Guns+2Range USA+2
What makes the GL431 stand out is its color contrast:
Green Tritium front – brightest, easiest for the eye to pick up quickly
Yellow Tritium rear lamps – still bright, but visually distinct from the front dot
This combination makes it easier to find and prioritize the front sight under stress, improving your ability to get a quick, precise sight picture when seconds matter.
Day & Night Visibility – White Outlines + Tritium
The GL431 is designed to be easily visible in all lighting conditions: EuroOptic+3ameriglo.com+3RK Guns+3
Daytime / Bright Light:
White outlines around all three Tritium lamps create a familiar 3-dot pattern that stands out against most backgrounds.
Black steel frame gives strong contrast, making the sight edges crisp and easy to align.
Low Light / No Light:
Tritium lamps glow continuously without batteries, providing a bright reference in darkness.
Green front / yellow rear color coding helps your eye identify the front sight immediately in dim conditions.
This makes the GL431 an excellent upgrade for home defense pistols and EDC guns that need to perform around the clock.
Built Tough – Steel Construction & Glock-Ready Dimensions
AmeriGlo machines these sights from steel for maximum durability – a serious upgrade over factory polymer sights on many Glock models. blackstoneshooting.com+2Primary Arms+2
Benefits of the steel construction:
Withstands hard daily carry, holster wear, and repeated one-handed slide manipulations
Holds zero under recoil and rough handling
Provides a clean, square rear sight edge, useful for racking the slide off a belt or hard surface in emergencies
The sight dimensions are carefully matched to the Glock 42/43/43X/48 slide profile so you get a proper point of impact with standard defensive loads once installed and verified.
Optimized for Concealed Carry & Defensive Use
The AmeriGlo GL431 is especially well-suited for slimline Glock carry pistols:
Low-profile design that resists snagging on clothing during the draw
Bright and intuitive sight picture for fast, close-range shooting
Refined 3-dot layout for more precise aiming at distance when you have time to refine your sight alignment RK Guns+2Primary Arms+2
If your Glock 42, 43, 43X, or 48 is your primary self-defense handgun, these sights provide a big improvement over basic white dots or polymer OEM units.
Easy Upgrade from Factory Glock Sights
The GL431 is designed as a direct replacement for factory Glock 42/43/43X/48 sights, using standard Glock:
Installation is typically done with:
Many shooters have these installed by a qualified gunsmith or armorer, but DIY installation is very manageable for those comfortable working on Glock pistols.
Once installed and zeroed, you have a set-and-forget steel night sight system that doesn’t rely on batteries or external light charging.
Technical Specifications – AmeriGlo GL431
From AmeriGlo and major retailers: ameriglo.com+5ameriglo.com+5blackstoneshooting.com+5
Manufacturer: AmeriGlo
Model: Classic Tritium Sight Set for Glock
Part Number: GL431
UPC: 644406908760
Firearm Fit: Glock 42, 43, 43X, 48 (incl. MOS)
Front Sight:
Green Tritium lamp
White outline
Height: 0.165"
Width: 0.125"
Rear Sight:
Two yellow Tritium lamps
White outlines
Height: 0.248"
Notch width: ~0.150"
Material: Steel
Finish: Black
Configuration: Classic 3-dot (green front / yellow rear)
Attachment Style: Front post / rear dovetail, fixed (non-adjustable)
Who Is the AmeriGlo GL431 For?
Choose the AmeriGlo Classic Tritium GL431 if you:
Carry a Glock 42, 43, 43X, or 48 for defensive use
Want true night sights with no batteries to worry about
Prefer a traditional 3-dot sight picture with improved color contrast (green front, yellow rear)
Want steel, duty-grade sights that can stand up to daily carry, training, and hard use
With rock-solid steel construction, bright Tritium lamps, and Glock-specific fitment, the AmeriGlo Classic Tritium Sight Set GL431 is one of the most effective and practical upgrades you can make to your slimline Glock.
The End
