L2D Combat Co-Witness/Suppressor Fiber Optic Sight Set Sig P320 9mm / 40SW Review

Let’s Dive into L2D Combat Co-Witness/Suppressor Fiber Optic Sight Set Sig P320 9mm / 40SW

The L2D Combat Co-Witness/Suppressor Fiber Optic Sight Set Sig P320 9mm / 40SW promises enhanced accuracy and target acquisition for Sig P320 owners. Offered by L2D Combat, these sights are designed with high-contrast fiber optic front sights and blacked-out rears. Their raised height facilitates a 1/3 co-witness sight picture with pistol red dots, making them perfect for shooters looking to improve their pistol’s sighting system, especially when a suppressor is in use.

For years, I’ve struggled to find the perfect sight system for my Sig P320 that could co-witness effectively with my red dot, and allow enough clearance for a suppressor. Factory sights were too low, and many aftermarket options simply didn’t deliver the clarity I needed in varied lighting conditions. This led me to explore the L2D Combat offering.

My first impression upon unboxing the L2D Combat Co-Witness/Suppressor Fiber Optic Sight Set Sig P320 9mm / 40SW was one of quality. The sights felt solid, the fiber optic inserts were bright, and the black nitride finish looked extremely durable. The machining appeared precise, and I immediately noticed the thoughtful design elements, such as the protective top beam on the front sight.

I considered options from Trijicon and Night Fision, both reputable brands, but the L2D Combat set offered a unique combination of co-witness height and fiber optic visibility at a compelling price point. My primary concern was achieving a clear sight picture with a suppressor attached, and the L2D Combat set seemed tailor-made for this. I was eager to install them and put them to the test.


Real-World Testing: Putting L2D Combat Co-Witness/Suppressor Fiber Optic Sight Set Sig P320 9mm / 40SW to the Test

First Use Experience

My initial testing of the L2D Combat Co-Witness/Suppressor Fiber Optic Sight Set Sig P320 9mm / 40SW took place at my local outdoor shooting range. I ran drills with and without a suppressor, focusing on target acquisition speed and accuracy at various distances. The sights performed exceptionally well.

The fiber optic front sight was incredibly easy to pick up, even in bright sunlight, making target acquisition lightning-fast. Shooting in slightly overcast conditions, the sights were equally impressive. I encountered no issues with glare or washout.

Installation was straightforward, though I did use a sight pusher tool to ensure proper alignment without damaging the slide. I experienced no immediate issues and was highly impressed with the co-witness height when used with my Holosun 507C. It was a perfect 1/3 co-witness, just as advertised.

Extended Use & Reliability

After several months of consistent use, the L2D Combat Co-Witness/Suppressor Fiber Optic Sight Set Sig P320 9mm / 40SW has proven to be incredibly reliable. I have put hundreds of rounds downrange. The sights remain securely mounted and the fiber optic inserts are just as bright as day one.

There are minimal signs of wear and tear. The black nitride finish has held up remarkably well against holster friction and general handling. Cleaning is a breeze, requiring only a quick wipe down after each range session to remove any powder residue.

Compared to the factory Sig Sauer sights, the L2D Combat set is a significant improvement in terms of visibility, accuracy, and overall usability. The factory sights felt inadequate after experiencing the crisp sight picture and fast target acquisition offered by these sights. I find my groupings at 25 yards have noticeably tightened.

Breaking Down the Features of L2D Combat Co-Witness/Suppressor Fiber Optic Sight Set Sig P320 9mm / 40SW

Specifications

The L2D Combat Co-Witness/Suppressor Fiber Optic Sight Set Sig P320 9mm / 40SW is constructed from durable 17-4 Stainless Steel, ensuring longevity and resistance to corrosion. The front blade height is 0.382 inches, while the rear blade height measures 0.42 inches. These dimensions are critical for achieving the desired co-witness with red dot sights and suppressor clearance.

The sight set is specifically designed for the SIG Sauer P320 platform in 9mm and .40SW calibers. It features a high-contrast fiber optic front sight (available in red or green) and a blacked-out rear sight to minimize distractions. These specifications contribute significantly to improved accuracy and target acquisition speed.

Performance & Functionality

The L2D Combat Co-Witness/Suppressor Fiber Optic Sight Set Sig P320 9mm / 40SW excels in its primary function: providing a clear and accurate sight picture. Target acquisition is significantly faster compared to standard sights, thanks to the bright fiber optic front post. The blacked-out rear sight further enhances focus on the front sight, leading to improved accuracy.

The set meets and exceeds expectations, offering reliable performance in a variety of shooting conditions. The only improvement I would suggest is offering different fiber optic colors beyond just red and green, such as yellow or orange.

Design & Ergonomics

The L2D Combat Co-Witness/Suppressor Fiber Optic Sight Set Sig P320 9mm / 40SW showcases excellent build quality and a thoughtful design. The 17-4 Stainless Steel construction gives the sights a robust and durable feel, while the black nitride finish adds to their corrosion resistance. The rounded edges prevent snagging on clothing or gear, and the included rear sight set screw adds an extra layer of security.

The sights are user-friendly and require no special tools or expertise for installation (though a sight pusher is recommended). The raised height ensures compatibility with most pistol red dots and provides adequate clearance when running a suppressor, making it a versatile choice for P320 owners.

Durability & Maintenance

Given the 17-4 Stainless Steel construction and black nitride finish, the L2D Combat Co-Witness/Suppressor Fiber Optic Sight Set Sig P320 9mm / 40SW is built to last. Proper maintenance involves regular cleaning to remove powder residue and occasional tightening of the rear sight set screw. With proper care, these sights should provide years of reliable service.

The black nitride finish is known for its resilience, offering excellent protection against scratches, wear, and corrosion. This ensures that the sights maintain their aesthetic appeal and functionality even after extensive use.

Accessories and Customization Options

The L2D Combat Co-Witness/Suppressor Fiber Optic Sight Set Sig P320 9mm / 40SW does not come with additional accessories beyond the rear sight set screw and fiber optic filament. The primary customization option lies in the choice of red or green fiber optic for the front sight.

The sights are designed to be compatible with a wide range of red dot sights commonly used on the Sig P320 platform. Their raised height ensures that they can co-witness effectively with these optics, providing a backup sighting system in case the red dot fails. They also work seamlessly with most suppressors on the market that are designed for the Sig P320.

Pros and Cons of L2D Combat Co-Witness/Suppressor Fiber Optic Sight Set Sig P320 9mm / 40SW

Pros

  • Exceptional Visibility: The high-contrast fiber optic front sight provides excellent visibility in various lighting conditions.
  • Co-Witness Compatibility: Designed to achieve a 1/3 co-witness with most pistol red dots.
  • Durable Construction: Made from 17-4 Stainless Steel with a black nitride finish for long-lasting performance.
  • Suppressor Clearance: Raised height provides adequate clearance when using a suppressor.
  • Easy Installation: Straightforward installation process with included set screw for added security.

Cons

  • Fiber optic color selection is limited to red or green.
  • Professional installation is recommended for optimal results.


Who Should Buy L2D Combat Co-Witness/Suppressor Fiber Optic Sight Set Sig P320 9mm / 40SW?

The L2D Combat Co-Witness/Suppressor Fiber Optic Sight Set Sig P320 9mm / 40SW is perfect for Sig P320 owners who want to improve their pistol’s sighting system with a bright and reliable fiber optic option. It’s ideal for competitive shooters, tactical users, and anyone who carries a P320 for self-defense. Those who use red dot sights and/or suppressors will particularly benefit from the co-witness height and suppressor clearance.

This product might not be the best choice for those who prefer traditional night sights or who are on an extremely tight budget. The price point, while reasonable, may be higher than basic aftermarket sight options.

A must-have accessory for this sight set is a high-quality sight pusher tool to ensure proper installation without damaging the slide or sights.

Conclusion on L2D Combat Co-Witness/Suppressor Fiber Optic Sight Set Sig P320 9mm / 40SW

The L2D Combat Co-Witness/Suppressor Fiber Optic Sight Set Sig P320 9mm / 40SW is a well-designed and high-quality upgrade for the Sig P320 platform. The enhanced visibility, durable construction, and co-witness compatibility make it a worthwhile investment for any serious shooter.

The price of $80.75 is justified by the improved performance and long-term reliability of these sights. I would highly recommend this sight set to anyone looking to enhance their Sig P320’s sighting system, especially those who use red dots and/or suppressors.

Upgrade your Sig P320 today and experience the difference a quality set of sights can make!

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