The Best Light for Glock 19 Illumination

Last Updated on January 5, 2021.

A high-quality Glock 19 is an incredibly versatile gun. Adding a light to a Glock 19 makes it more versatile.

Simple as that.

Choosing which light to put on your handgun is not quite as simple. There are a lot of options.

  • Excellent brightness for target identification and blinding targets.
  • Plenty of battery life for typical handgun light operation.
  • Ambidextrous controls.

SPOILER—if you want to simplify the decision, just get the Streamlight TLR-1 Weapon Light. It’s capable enough for just about anything. And it’s affordable. Just like the Glock 19...

If you want to evaluate all your options before flipping the switch, keep reading. We’ll talk about all the best lights for your Glock 19.

The Best Light For Glock 19 Reviews: Light It Up!

As usual, our contenders are lined up in order of price, from priced best to priceless. And, our best light for Glock 19 is up first.

Let’s shed some light on the subject.

1. Streamlight TLR-1 Weapon Light - Overall Best Light for Glock 19

Streamlight has been around for a while now. And they’ve built a great reputation as a quality, affordable alternative to some of the more expensive weapon lights. The Streamlight TLR-1 Weapon Light is one of their most popular lights that offers a good blend of performance and price.

First, it’s bright. Not crazy bright. But it puts out 300 lumens of white light. That’s easily enough for target identification at typical handgun engagement distances. And it’s bright enough to be blinding, if you use your light for that purpose.

The light comes from 2 CR-123 batteries that provide 2.5 hours of continuous operation. There are very few lights that offer a longer run time than this one. It’s more than enough for typical weapon light operation.

The controls are ambidextrous. So you can operate your light with your strong or weak hand, regardless of which hand you shoot with.

And the body is machined from 6000 series aluminumSo your light will hold up to whatever abuse you throw at it.

Lastly, the mounting system will fit any rail systemThat way you can swap your light between guns, if you want.

Overall, this isn’t the most tactical, high speed light ever. But it’s an excellent all purpose light that will work for almost anyone. It’s durable and powerful enough for any type of shooting. It’s just not specialized for any one shooting context.


  • Excellent brightness for target identification and blinding targets.
  • Plenty of battery life for typical handgun light operation.
  • Ambidextrous controls.
  • Durable aluminum construction.
  • Universal mounting system.


  • Battery life could be better.

2. Streamlight TLR-3 Compact Weapon Light - Budget Light for Glock 19

The Streamlight TLR-3 Compact Weapon Light is a very capable weapon light that won’t add much bulk to your gun.

For a small weapon light, it’s impressively bright. This light puts out 125 lumens of white light. It’s definitely bright enough for target identification at most handgun shooting distances. And it’s bright enough to be blinding. But those who plan on using their light as a disruptive tool may prefer something a bit brighter.

1 CR2 battery provides the power. One battery lasts up to 1.5 hours of continuous use. It’s not a super long battery life. But it will do just fine for most weapon light operation.

The controls are ambidextrous for strong and weak hand operation, as you might expect.

And the housing is reinforced polymer, with an aluminum lens housing. The housing is waterproof under 1 meter of water for up to 30 minutes.

So it’ll hold up if you’re the type who trains no matter what the weather is like.

However, a polymer housing just isn’t as durable as an aluminum housing. This light is tough. But if you’re really slamming your gun around all the time, you might want something made of metal.

Lastly, the mounting system is universal and will fit any handgun rail. So this light is an excellent option for those who like to swap their lights between guns.

If you’re looking for a light that doesn’t extend so far beyond the muzzle of your gun, this is an excellent option.


  • Bright enough for any shooting context.
  • Solid battery life.
  • Ambidextrous controls to accomodate any operation technique.
  • Durable, waterproof construction.
  • Universal mounting clamp.


  • May not be bright enough for reliable us as a disruptive tool.
  • Polymer construction is tough, but simply not as strong as aluminum.

3. Inforce-Mil - APL Gen3 White Pistol Light - Value Light for Glock 19

The Inforce-Mil Gen3 White Pistol Light is a very simple and streamlined light that will do the trick in most situations.

First, it puts out 400 lumens. That’s impressive, especially considering the size of the light. That’s more than enough for target identification. And it will work for blinding and disruption, if those are part of your tactics.

The light is produced by 123A batteries. And a single charge will get you 1.5 hours of continuous operation. The battery life is good. But not great. However, most shooters won’t have any issues during standard weapon light operation.

This model offers ambidextrous controls. And the controls are simple paddle buttons that make it easy and intuitive to operate the light with either hand.

The body is constructed from a proprietary fiber composite. This light is plenty durable and impact resistant

And, although the composite won’t dent like aluminum will, the composite isn’t as durable as aluminum. But you won’t notice unless you’re really beating up on your gun.

Lastly, this light comes with 2 rail mounting bars that fit both universal and picatinny railsSo you can swap this light between your Glock 19 and most of your other handguns.

For the money, this is a tough light to beat. If you want to get the most lumens-per-dollar, this might be the best light on the market.


  • Excellent brightness, especially considering the size.
  • Decent runtime on a single battery.
  • Intuitive, ambidextrous controls.
  • Fiber composite construction is lightweight and durable.
  • Fits universal and picatinny rails.


  • Battery life could be better.
  • Composite construction isn’t as durable as aluminum, though still very strong.

4. Streamlight TLR-4 Weapon Light - Compact Light for Glock 19

The Streamlight TLR-4 Weapon Light certainly isn’t the only compact light on the market. But it’s definitely one of the most capable compact weapon lights around.

This model puts out 125 lumens of white light. That’s respectable. But not as bright as some other lights in this price range. However, this light is perfectly capable for defensive and tactical shooting. It just may not be bright enough to be a reliable disruption tool.

But this light comes with an integrated red laser. So you get some aiming enhancement with your illumination. Or you can just use the laser.

This model will run for 1.5 hours of continuous illumination on a single CR-2 battery. Or you get 11 hours of operation with just the laser. Both runtimes are adequate for a handgun light.

The controls are ambidextrous and easy to reach with either hand, using any operation technique.

This light is built with a reinforced polymer body with an aluminum lens housingIt’s durable. Although some shooters may prefer a completely aluminum light.

Lastly, the mounting system will fit any type of railSo you can slap this light on any gun in your safe.

Overall, this model is an excellent option for those who want a light and laser combo. It’s also ideal for those who want to mount their light on a compact or subcompact handgun, in addition to their Glock 19.


  • Respectable brightness, especially considering the compact design.
  • Integrated aiming laser.
  • Ambidextrous controls for right or left-handed manipulations.
  • Durable reinforced polymer and aluminum construction.
  • Fits any type of rail.


  • Not as bright as a dedicated light, without a laser.
  • Completely aluminum construction would be a bit more durable.

5. Streamlight TLR-1 HL Weapon Light - High Brightness Light for Glock 19

The Streamlight TLR-1 HL Weapon Light is an enhanced version of their flagship TLR-1 light. It’s got all the same features as the standard TLR-1. But this light is much brighter…

This light is the same size and shape as the standard TLR-1. But it puts out 800 lumens of white light. That’s a lot of light. More than enough for target identification at any realistic handgun engagement distance. And plenty for reliable use as a disruptive tool, if that’s your plan.

There’s also a strobe mode, for those who really want to use their light for disruption.

It takes 2 CR123 batteries to produce all that light. And the extreme brightness is a bit less efficient. This model only gets 1.25 hours of continuous use from a pair of batteries. Not bad. But you’re definitely trading some runtime for brightness.

The controls are ambidextrous and easy to use with either hand, using your fingers or thumb.

Just like the original TLR-1, the body is constructed entirely of machined 6000 series aluminum for maximum durability. It’ll hold up even if you like bashing your gun on stuff.

Lastly, the mounting bar will fit any type of rail. If you want to take this light off your Glock 19 and throw it on a different handgun, you can do that.

All in all, if you’re looking for a really bright light at an affordable price, this is the light for you.

6. Surefire X300U-A Ultra Weapon Light - Tactical Light for Glock 19

Surefire has been a staple in the weapon light industry for a long time. The Surefire X300U-A Ultra Weapon Light is one of their flagship tactical lights.

So this light is super bright. It pumps out 1000 lumens of white light. This is wildly bright. Far more than enough for standard handgun engagement distances. You can use this light for target identification at exceptionally long distances.

And it’s bright enough to reliably blind anyone.

You’ll get 1.5 hours of runtime from 2 123A batteries. That’s decent battery life. But you can see the impact that the brightness has on the battery life.

The controls are simple, ambidextrous flip switches that make this light easy to use, regardless of whether you run your light with your thumb or index finger.

And the body is waterproof aluminum. This light is submersible up to 22 meters, just in case you need it for a beach landing or river operations. 

All jokes aside, the construction is incredibly durable, which is what you need from a tactical light.

The mounting bar fits universal and picatinny rails. And this light is compatible with Surefire remote switchesSo you can run this light on your rifle, too.

This light is a bit pricey. But if you want all the lumens, this is the light to get.


  • Amazing brightness. Ideal for tactical use.
  • Good battery life, considering the light output.
  • Simple, ambidextrous controls.
  • Exceptionally durable construction.
  • Fits most mounting rails.


  • Expensive.

Hitting the Lights

No matter what you use your Glock 19 for, a weapon light can help you use your handgun better in a variety of situations. And a weapon light makes the recoil feel softer.

If you want to buy a good light without spending your entire paycheck, get the Streamlight TLR-1 Weapon Light. It’s an excellent light, and it comes at an excellent price. It’s a complete solution.

Now that you’ve seen the light, get yourself a light for your Glock 19. That way you can see when you need to.