When it comes to enhancing the performance and accuracy of your SIG Sauer M400, investing in a quality laser sight is a decision you won’t regret. Not only does it improve target acquisition, but it also boosts confidence, especially in low-light conditions. With a plethora of options available, it can be overwhelming to choose the right one. Here, I've selected and reviewed six of the top laser sights suitable for the SIG Sauer M400. Each product is evaluated based on its specifications, features, pros, cons, and user experiences.

Top 6 Best Laser Sights for SIG Sauer M400 on the Market

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SureFire X400U-A⁠

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Streamlight TLR-2 HL G⁠

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Crimson Trace CMR-301⁠

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OLIGHT Baldr Pro R⁠

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Viridian X5L Gen 3⁠

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HOLOSUN LS321G⁠

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

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1. SureFire X400U-A - Laser Light Combo

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Specifications

Laser Type: Red

Laser Output: 5 mW

Light Output: 1,000 lumens

Battery Type: 2 x CR123A

Weight: 4.9 oz

Waterproof: Yes, IPX7

Best Features

Integrated laser and light combo

Durable aerospace aluminum body

Ambidextrous switch for easy operation

TIR lens for focused beam

Pros

Extremely bright light output

Durable and reliable construction

Easy to install and adjust

Waterproof and impact-resistant

Cons

Relatively expensive

Bulkier compared to some other options

User Experience

Using the SureFire X400U-A on my SIG Sauer M400 has been a game-changer, particularly in low-light scenarios. The combination of a powerful light and an accurate laser makes target acquisition seamless. Its robust build ensures that it can withstand rough handling, making it a reliable companion in various conditions.

Customer Comments

Users appreciate the SureFire X400U-A for its powerful illumination and precision. However, some mention its higher price point as a potential drawback.

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2. Streamlight TLR-2 HL G - Laser Light Combo

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Specifications

Laser Type: Green

Laser Output: 5 mW

Light Output: 800 lumens

Battery Type: 2 x CR123A

Weight: 4.78 oz

Waterproof: Yes, IPX4

Best Features

High visibility green laser

Compact and lightweight design

Secure rail grip clamp system

Long battery life

Pros

Bright and clear laser

Easy to mount and dismount

Strong light output

Good battery performance

Cons

Light could be brighter compared to some competitors

Slightly less rugged than some other options

User Experience

The Streamlight TLR-2 HL G offers excellent performance with its high-visibility green laser, which is easier to see during daylight compared to red lasers. Its compact design doesn't add much bulk to the SIG Sauer M400, making it ideal for quick maneuvers and handling.

Customer Comments

Many users highlight the ease of installation and the brightness of the green laser. Some wish for a slightly more robust build, but overall, it's well-received for its performance and reliability.

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3. Crimson Trace CMR-301

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Specifications

Laser Type: Green

Laser Output: 5 mW

Light Output: 1,000 lumens

Battery Type: Rechargeable Li-Ion

Weight: 6.9 oz

Waterproof: Yes, IPX4

Best Features

Innovative pressure pad for quick activation

Integrated green laser and tactical light

Adjustable for windage and elevation

Durable aluminum housing

Pros

High power light and laser combo

Easy activation with pressure pad

Adjustable laser for precision

Long-lasting rechargeable battery

Cons

Heavier compared to other options

Slightly complex installation process

User Experience

The Crimson Trace CMR-301 is an impressive piece of equipment with its high-output light and green laser. The pressure pad activation is particularly handy for quick response scenarios. Although it's a bit heavier, its robust build and performance outweigh this minor drawback.

Customer Comments

Users often praise the Crimson Trace CMR-301 for its innovative features and solid build. The rechargeable battery is a significant advantage, though the initial setup can be a bit tricky.

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4. OLIGHT Baldr Pro R - Laser Light Combo

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Specifications

Laser Type: Green

Laser Output: 5 mW

Light Output: 1,350 lumens

Battery Type: Rechargeable Li-Ion

Weight: 4.55 oz

Waterproof: Yes, IPX4

Best Features

High-intensity light and green laser combo

Rechargeable with magnetic charging

Quick attach and release mounting system

Multiple lighting modes

Pros

Very bright light output

Convenient magnetic charging

Compact and lightweight design

Easy to use mounting system

Cons

Battery life could be longer

Higher price point

User Experience

The OLIGHT Baldr Pro R stands out with its impressive 1,350 lumens light, making it one of the brightest options on the list. The magnetic charging feature is incredibly convenient, eliminating the need for battery replacements. Its compact design ensures it doesn't add unnecessary bulk to the SIG Sauer M400.

Customer Comments

Customers are highly satisfied with the brightness and ease of use of the OLIGHT Baldr Pro R. The magnetic charging system receives a lot of praise, although some users mention that they would prefer a longer battery life.

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5. Viridian X5L Gen 3 - Laser Light Combo

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Specifications

Laser Type: Green

Laser Output: 5 mW

Light Output: 500 lumens

Battery Type: Rechargeable Li-Ion

Weight: 2.81 oz

Waterproof: Yes

Best Features

Enhanced Combat Readiness (ECR) system

High-intensity green laser

Rechargeable battery with USB charging

Lightweight and compact design

Pros

Innovative ECR activation system

Bright green laser

Rechargeable with USB

Lightweight

Cons

Light output is lower compared to others

Battery life is average

User Experience

The Viridian X5L Gen 3's standout feature is its Enhanced Combat Readiness system, which activates the laser and light instantly when drawn. This feature, along with its bright green laser and compact design, makes it a great addition to the SIG Sauer M400. The USB charging is a convenient feature, though the battery life could be improved.

Customer Comments

Users love the ECR system for its quick activation, and the green laser's visibility is highly praised. However, some feel that the light could be brighter and the battery life longer.

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6. HOLOSUN LS321G

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Specifications

Laser Type: Green

Laser Output: 5 mW

Light Output: N/A

Battery Type: CR123A

Weight: 8.32 oz

Waterproof: Yes, IP67

Best Features

Multi-laser design (visible, IR, and IR illuminator)

Durable titanium housing

Easy to switch between modes

Remote pressure switch included

Pros

Versatile with multiple laser types

Extremely durable build

High visibility green laser

Waterproof and dustproof

Cons

Heavier than other options

No integrated flashlight

User Experience

The HOLOSUN LS321G is a versatile and robust laser sight, ideal for those who need more than just a visible laser. The inclusion of IR lasers and illuminators adds to its utility in various scenarios. Despite its heavier weight, the titanium housing ensures durability, making it a reliable choice for the SIG Sauer M400.

Customer Comments

Users appreciate the versatility and durability of the HOLOSUN LS321G. The weight is a common point of criticism, but its robust performance and multiple laser options are highly valued.

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Laser Light Combo for SIG Sauer M400

When it comes to choosing a laser light combo for the SIG Sauer M400, the SureFire X400U-A and OLIGHT Baldr Pro R stand out as top contenders. Both offer powerful light outputs combined with precise lasers, enhancing the rifle's performance in low-light conditions. These combos not only improve target acquisition but also provide tactical advantages, making them ideal for both professional and recreational use.

How to Choose the Best Laser Sight for SIG Sauer M400

Laser Type: Red vs. Green

Green lasers are generally more visible in daylight conditions compared to red lasers.

Light Output:

Consider the lumens for the flashlight component; higher lumens provide better illumination.

Mounting System:

Ensure the laser sight has a secure and easy-to-use mounting system compatible with your SIG Sauer M400.

Durability:

Look for products with robust construction, preferably with water and impact resistance.

Battery Type:

Rechargeable batteries are convenient, but consider the overall battery life and ease of replacement.

Additional Features:

Features like remote pressure switches, adjustable lasers, and quick detach mounts can add value.

FAQs

Q1: Is it better to use a green or red laser for the SIG Sauer M400?

A1: Green lasers are typically more visible in daylight conditions, making them preferable for outdoor use. Red lasers can be less expensive and still effective in low-light or indoor settings.

Q2: Can I install these laser sights myself?

A2: Yes, most laser sights come with user-friendly mounting systems that allow for easy installation. Always follow the manufacturer’s instructions for the best results.

Q3: How do I maintain and care for my laser sight?

A3: Regularly clean the lens and body of the laser sight to prevent dirt and debris from affecting performance. Check the battery status and replace or recharge as needed. Store the laser sight in a dry place to avoid moisture damage.

Q4: Are these laser sights legal for use in all states?

A4: Laser sight legality can vary by state and local laws. Always check the regulations in your area to ensure compliance.

Q5: Do these laser sights come with warranties?

A5: Most reputable brands offer warranties on their laser sights. Check the specific product details for warranty information.

Conclusion

Selecting the best laser for your SIG Sauer M400 can significantly enhance your shooting experience. Each of the reviewed products offers unique advantages, from the powerful SureFire X400U-A to the innovative Viridian X5L Gen 3. Consider your specific needs and preferences when making your choice. With the right laser sight, you'll enjoy improved accuracy, faster target acquisition, and overall better performance with your SIG Sauer M400.

Top 6 Best Laser Sights for SIG Sauer M400 on the Market

1. SureFire X400U-A - Laser Light Combo

2. Streamlight TLR-2 HL G - Laser Light Combo

3. Crimson Trace CMR-301

4. OLIGHT Baldr Pro R - Laser Light Combo

5. Viridian X5L Gen 3 - Laser Light Combo

6. HOLOSUN LS321G

Laser Light Combo for SIG Sauer M400

How to Choose the Best Laser Sight for SIG Sauer M400

FAQs

Conclusion

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