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Top 6 Best Laser Sights For Glock 42 of 2024

As a Glock 42 owner, I know the importance of having a reliable laser sight to enhance shooting accuracy and target acquisition. The Glock 42, being a compact and versatile firearm, requires a laser that complements its lightweight design while providing superior performance. I have tested and reviewed several laser sights and narrowed down the top choices that are perfect for this model.
In this article, I’ll share my insights on the best laser sights for the Glock 42, detailing their specifications, best features, pros, cons, and user experiences. Additionally, I’ll provide a comprehensive guide on how to choose the best laser for your Glock 42 and answer some frequently asked questions.

Top 6 Best Laser Sights For Glock 42 on the Market

Note: The following advice comes from my personal perspective. What works for me might not work for you, but hopefully it sparks some ideas!

1. Streamlight TLR-6 - Laser Light Combo

Streamlight TLR-6.png
Specifications
Laser Type: Red laser
Battery: 2 CR1/3N lithium batteries
Runtime: 1 hour
Weight: 1.27 oz (with batteries)
Material: Impact-resistant polymer
Best Features
The Streamlight TLR-6 is designed specifically for subcompact handguns like the Glock 42. It combines a red aiming laser with an LED light, offering a dual-purpose solution. Its ambidextrous operation and tool-less battery replacement make it user-friendly and convenient.
Pros
Lightweight and compact
Easy to install and remove
Dual functionality (laser and light)
Ambidextrous activation
Affordable price
Cons
Short battery life
Limited brightness in daylight
Experience
Using the Streamlight TLR-6 on my Glock 42 was a game-changer. The compact design fits perfectly without adding bulk, and the laser greatly improved my accuracy during low-light conditions. However, I had to carry spare batteries due to the relatively short runtime.
Customer Comments
Many users praise the TLR-6 for its perfect fit and easy installation. Some have noted the short battery life but appreciate the overall performance and reliability.

2. Crimson Trace LG-422

Crimson Trace LG-422.png
Specifications
Laser Type: Red laser
Battery: 2 2032 lithium batteries
Runtime: 4 hours
Weight: 0.5 oz
Material: Polymer
Best Features
The Crimson Trace LG-422 features instinctive activation, turning on the laser when the firearm is gripped. This immediate activation is ideal for defensive situations. It’s designed to seamlessly integrate with the Glock 42's trigger guard, ensuring a snug fit.
Pros
Instinctive activation
Long battery life
Durable construction
No need for additional switches
Cons
Only available in red laser
Higher price point
Experience
The instinctive activation feature of the LG-422 is incredibly intuitive, making it ready to use in any situation. The long battery life means fewer changes and more reliability. This laser sight blends seamlessly with the Glock 42, maintaining its sleek profile.
Customer Comments
Users love the instinctive activation and the seamless fit with the Glock 42. Some wish it came with a green laser option, but overall, the feedback is overwhelmingly positive regarding performance and ease of use.

3. Viridian Reactor R5 Gen 2

Viridian Reactor R5 Gen 2.png
Specifications
Laser Type: Green laser
Battery: 1/3N lithium battery
Runtime: Up to 1 hour
Weight: 0.78 oz
Material: Polymer
Best Features
The Viridian Reactor R5 Gen 2 stands out with its bright green laser, which is visible in all lighting conditions. The included ECR (Enhanced Combat Readiness) holster automatically activates the laser when drawn, ensuring it's ready when you need it.
Pros
Highly visible green laser
Automatic activation with ECR holster
Compact and lightweight
Simple installation
Cons
Shorter battery life
Higher price range
Experience
The green laser of the Viridian Reactor R5 Gen 2 was impressively bright and easy to see in daylight. The automatic activation with the ECR holster is a fantastic feature for quick deployment. However, the battery life required me to keep spares handy.
Customer Comments
Users appreciate the bright green laser and the automatic activation feature. Some mention the frequent battery changes but still recommend it for its visibility and quick readiness.

4. OLIGHT Baldr Mini - Laser Light Combo

OLIGHT Baldr Mini.png
Specifications
Laser Type: Green laser
Battery: Built-in rechargeable
Runtime: 40 minutes
Weight: 3.07 oz
Material: Aluminum alloy
Best Features
The OLIGHT Baldr Mini combines a powerful green laser with an LED light, offering dual functionality. It’s rechargeable, eliminating the need for battery replacements. The quick detach mount and adjustable rail make it versatile and easy to use.
Pros
Rechargeable battery
Dual functionality (laser and light)
Quick detach mount
Adjustable rail for various positions
Cons
Heavier compared to other models
Limited runtime
Experience
The OLIGHT Baldr Mini's green laser is bright and effective in various lighting conditions. The built-in rechargeable battery is convenient, though I had to ensure it was charged before use. The quick detach mount and adjustable rail provided flexibility in positioning.
Customer Comments
Users enjoy the brightness of both the laser and the light. The rechargeable feature is highly appreciated, though some mention the weight as a minor drawback.

5. ArmaLaser TR5

ArmaLaser TR5.png
Specifications
Laser Type: Red laser
Battery: 1 3V CR1/3N lithium battery
Runtime: 2 hours
Weight: 1.2 oz
Material: DuPont Zytel polymer
Best Features
The ArmaLaser TR5 is designed specifically for the Glock 42, featuring touch-activated technology for immediate laser activation. Its durable construction and easy installation make it a reliable choice for everyday carry.
Pros
Touch-activated for instant use
Durable and lightweight
Easy installation
Affordable price
Cons
Only available in red laser
Shorter runtime
Experience
The touch activation of the ArmaLaser TR5 was responsive and reliable. Its lightweight design didn’t add bulk to my Glock 42, and the installation was straightforward. While the runtime could be longer, the performance was consistently good.
Customer Comments
Users commend the TR5 for its ease of use and reliable activation. The affordability is a significant plus, though some desire a green laser option for better visibility.

6. Tacticon Firefly V2 - Laser Light Combo

Tacticon Firefly V2.png
Specifications
Laser Type: Green laser
Battery: 1 rechargeable lithium-ion battery
Runtime: 6 hours
Weight: 1.6 oz
Material: Aluminum
Best Features
The Tacticon Firefly V2 offers a bright green laser and includes a rechargeable battery with a long runtime. Its rugged aluminum construction ensures durability, and the easy activation switch is user-friendly.
Pros
Long battery life
Rechargeable
Durable construction
Easy activation
Cons
Slightly bulkier
Laser adjustment can be tricky
Experience
The Tacticon Firefly V2 impressed me with its long battery life and bright green laser. The rechargeable feature is convenient, and the durable construction gives confidence in its longevity. Adjusting the laser took some effort, but once set, it remained accurate.
Customer Comments
Users appreciate the long battery life and robust build quality. Some have noted the adjustment process as a bit challenging but overall find it to be a reliable and powerful laser sight.
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