Top 10 Best Glock 21 Sights
of November 2024
1
Best Choice
Ade Advanced Optics
Ade Advanced Optics
Ade Advanced Optics RD3-006B Green Dot Sight for Handgun - Not Red
10
Exceptional
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2
Best Value
TRUGLO
TRUGLO
TRUGLO Tritium Handgun Glow-in-the-Dark Night Sights for Glock Pistols, Glock 20, 21, 25, 28, 29, 30 and more
9.9
Exceptional
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3
TRUGLO
TRUGLO
TRUGLO Fiber-Optic Front and Rear Handgun Sights for Glock Pistols, Glock 20, 21, 25, 29, 30, 31, 32, 37, 40, and 41, Black, One Size (TG131G2)
9.8
Exceptional
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4
TRUGLO
TRUGLO
TRUGLO Tritium Pro Glow-in-The-Dark Handgun Night Sights for Glock Pistols, Glock 20, 21, 25, 28, 29, 30 and More, White Ring
9.7
Exceptional
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5
TRUGLO
TRUGLO
TRUGLO TFX Pro Tritium and Fiber Optic Xtreme Handgun Sights for Glock Pistols
9.6
Exceptional
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6
Trijicon
Trijicon
Trijicon Glock Bright & Tough Night Sight Set (Yellow)
9.5
Excellent
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7
AmeriGlo
AmeriGlo
AmeriGlo Hackathorn Sight Set Compatible with Glock 20/21, Black
9.4
Excellent
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8
Trijicon
Trijicon
Trijicon GL204-C-600689 Bright & Tough Night Sight Suppressor Set, Glock 20/21/29/30/36/40/41, White Front/ White Rear with Green Lamps
9.3
Excellent
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9
AmeriGlo
AmeriGlo
AmeriGlo Spartan Operator Sight Set for Glock 20/21, Green
9.2
Excellent
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10
Trijicon
Trijicon
Trijicon GL204-C-600695 Bright & Tough Night Sight Suppressor Set, Glock 20/21/29/30/36/40/41, White Front/ black Rear with Green Lamps
9.1
Excellent
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11
AmeriGlo
AmeriGlo
Ameriglo Pro-IDOT Tritium For Glock20/21
9.0
Excellent
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About Glock 21 Sights
Click here to learn more about these products.
Ade Advanced Optics RD3-006B Green Dot Sight for Handgun - Not Red
This green dot sight comes equipped with a Picatinny mounting base and is also compatible with various handgun mounting plates that replace the rear sight dovetail. It's designed to fit the Doctor Footprint PlateSlide seamlessly.. The onoff switch for this sight is conveniently positioned at the front, making it much easier to press compared to red dots with side-mounted switches. It features a 3 MOA dot size and offers 5 illumination settings. The sight is fully adjustable for windage and elevation and can be locked into place. With unlimited eye relief and various illumination settings, it is powered by an included lithium CR2032 battery.. Since its initial release in 2014, we've implemented numerous improvements to enhance its durability, ensuring it can withstand recoil while also improving its ability to hold zero. The front switch, battery housing, and hardware have all been recently updated, reflecting our commitment to continuous enhancement. This product is proudly designed in Oregon.. Although it's feasible to install the optic on a handgun without the assistance of a gunsmith, we highly recommend seeking the expertise of a professional for the installation process. It's essential to note that unprofessional installations, such as improper torque application, can lead to issues like loose screws, an inability to hold zero, damage to the firearm or optic, and even pose a risk of personal injury.. If you're not seeing a perfect round dot but instead observe a splashed dot, half-moon shape, multi-dot, or starburst, there's a high probability 99 that you might have astigmatism without being aware of it. What you perceive is likely a small reflection of the LED light on the lens. A quick and simple way to confirm this is by using your cellphone to take a photo of the dot. If the photo shows a circular dot, you've essentially diagnosed yourself with astigmatism.. ADE RD3-006 Huracan,RD3-009 Crusader,RD3-012 Delta, RD3-012 PRO, RD3-013 Bertrillium ,RD3-015 Zantitium, RD3-028 Ares fit optic cutplate that is compatible with Vortex VenomBurris FastfireDoctor footprint. ADE RD3-018 Spike, RD3-021 Nuwa, RD3-021 NUWA PRO and RD3-030 Apollo fit optic cutoptic plate that is compatible with shield RMSRMSCDeltapoint Pro footprint. ADE RD3-021c NUWAcc fits optic cutoptic plate that is compatible with Trijicon RMRcc footprint. ADE RD3-019 Stingray, RD3-020 Raptor, RD3-022 Artemis, RD3-023 Valkyrie and RD3-029 Trumpet fit optic cutoptic plate that is compatible with Trijicon RMRSROHolosun 407C507C footprint.
TRUGLO Tritium Handgun Glow-in-the-Dark Night Sights for Glock Pistols, Glock 20, 21, 25, 28, 29, 30 and more
UNMATCHED VISIBILITY in low light shooting conditions or complete darkness GLOWS IN THE DARKno batteries or light exposure required. At night, sights are GLOWING GREEN DOTS In daylight, sights are standard BRIGHT WHITE DOTS. Made of tough, CNC-machined steel with a FORTRESS FINISH COATING for maximum protection. SNAG RESISTANT DESIGN fits standard holsters SQUARE-NOTCH DESIGN is duty proven. Fits Glock 20, 21, 25, 28, 29, 30, 31, 32, 37, 40 and 41 Excluding M.O.S models.
TRUGLO Fiber-Optic Front and Rear Handgun Sights for Glock Pistols, Glock 20, 21, 25, 29, 30, 31, 32, 37, 40, and 41, Black, One Size (TG131G2)
Fiber-optics for the BRIGHTEST AIMING POINTS even in low-light conditions. TRI-DOT AIMING SYSTEM of contrasting front and rear colors. CONCEALED FIBER cannot be seen by target SNAG RESISTANT DESIGN fits standard holsters. FORTRESS FINISH COATING provides a permanent protective coating for maximum protection. Fits Glock 20, 21, 25, 28, 29, 30, 31, 32, 37, 40 and 41 Excluding M.O.S models.
TRUGLO Tritium Pro Glow-in-The-Dark Handgun Night Sights for Glock Pistols, Glock 20, 21, 25, 28, 29, 30 and More, White Ring
Fits Glock 20, 21, 25, 28, 29, 30, 31, 32, 37, 40, and 41 Excluding M.O.S. models. Brightness and durability of our original Tritium sights, but with added Pro-level features Tritium night sights transition from standard white dot sights during the daylight, to glowing green dots in the the dark. Utilizes quality Swiss tritium for maximum brightness and unmatched visibility in all shooting conditions 247 Glows in the dark with no batteries or light sources needed. Front sight features a highly visible white Focus-Lock ring surrounding the front fiber to make it even more visible, encouraging the eye to rapidly focus on the front sight for a fast and accurate sight picture. Compact design maintains factory sight radius and fits standard holsters Angled rear sight edge for emergency onehand operation.
TRUGLO TFX Pro Tritium and Fiber Optic Xtreme Handgun Sights for Glock Pistols
Fits Glock 20, 21, 25, 28, 29, 30, 31, 32, 37, 40, and 41 will NOT fit Glock M.O.S. models. Next-level TFX sight technology for professionals and shooters who demand maximum performance from their handguns Provides ultimate reliability, accuracy, and brightness no matter how tough things get. Contrasting colored front sight FOCUS-LOCK ring for even faster focus Machined and assembled in the USA with quality Swiss tritium for maximum brightness. TFX hermetically-sealed capsule design provides maximum protection and durability, plus a Fortress Finish provides a permanent protective coating Impervious to oils, chemicals, cleaning solvents, and ultra-sonic cleaning processes. Rear sight features a quick and accurate U-notch design and has an angled edge for emergeny one-handed operation Evaluated and recommended by National Tactical Officers' Association NTOA field testers Fits standard holsters 12-year limited warranty.
Trijicon Glock Bright & Tough Night Sight Set (Yellow)
Black bright tough night sight setfits Glock models 20, 21, 29, 30, 36, 40, and 41 including S and SF Variants. High rear sightgreen front and yellow rear. Machined steel construction. Extra large front dottritium-illumination technologyno batteries Required. Made in United States.
AmeriGlo Hackathorn Sight Set Compatible with Glock 20/21, Black
Green tritium orange round outline front. Black serrated rear. Made in China.
Trijicon GL204-C-600689 Bright & Tough Night Sight Suppressor Set, Glock 20/21/29/30/36/40/41, White Front/ White Rear with Green Lamps
INCREASED HEIGHT Specically engineered to allow use with a suppressor or as backup iron sights for a slide-mounted red dot sight, such as the Trijicon RMR. INSTANTLY VISIBLE SIGHT PICTURE IN NO-LIGHT AND LOW-LIGHT SITUATIONS Tritium phosphor- lled glass lamp provides battery-free glow, allowing for a visible sight picture in all lighting situation. ENHANCED PROTECTION FROM HEAVY RECOIL AND HARSH CLEANING SOLVENTS Tritium gas lamps are contained within protective aluminum cylinders and have additional silicone rubber cushioning. SAPPHIRE WINDOW Each Trijicon tritium lamp is capped with a sapphire jewel which helps to evenly distribute the light from the tritium lamp as well as protect it from solvents and puncture. FITS GLOCK MODELS 20, 21, 29, 30, 36, 40, and 41 including S and SF variants.
AmeriGlo Spartan Operator Sight Set for Glock 20/21, Green
For Glock 20,21,29,30,31,32,36,40 and 41. Tritium lamp. Model NumberGL448. Country of OriginUnited States.
Trijicon GL204-C-600695 Bright & Tough Night Sight Suppressor Set, Glock 20/21/29/30/36/40/41, White Front/ black Rear with Green Lamps
INCREASED HEIGHT Specically engineered to allow use with a suppressor or as backup iron sights for a slide-mounted red dot sight, such as the Trijicon RMR. INSTANTLY VISIBLE SIGHT PICTURE IN NO-LIGHT AND LOW-LIGHT SITUATIONS Tritium phosphor- lled glass lamp provides battery-free glow, allowing for a visible sight picture in all lighting situation. ENHANCED PROTECTION FROM HEAVY RECOIL AND HARSH CLEANING SOLVENTS Tritium gas lamps are contained within protective aluminum cylinders and have additional silicone rubber cushioning. SAPPHIRE WINDOW Each Trijicon tritium lamp is capped with a sapphire jewel which helps to evenly distribute the light from the tritium lamp as well as protect it from solvents and puncture. FITS GLOCK MODELS 20, 21, 29, 30, 36, 40, and 41 including S and SF variants.
Ameriglo Pro-IDOT Tritium For Glock20/21
Rear tritium color green with orange outline. For Glock 20,21,29,30,31,32,36,40 and 41. Manufactured designed in the USA. Model NumerGL-203.