Holosun HS403C 1x 2 MOA Red Dot Sight Review

My first impression of Holosun HS403C 1x 2 MOA Red Dot Sight

The Holosun HS403C 1x 2 MOA Red Dot Sight is a compact, versatile optic designed for a wide range of firearms, from AR-15s to shotguns. Holosun has built a solid reputation for delivering quality optics at reasonable prices, and the HS403C appears to continue that trend with its crisp 2 MOA dot, long battery life, and included mounting options. I was looking for a reliable, yet affordable red dot for my home defense carbine, something that offered quick target acquisition in low-light conditions without breaking the bank.

After years of relying on iron sights, I decided to upgrade to a red dot, primarily for faster target acquisition in dynamic scenarios. I considered options from Aimpoint and Trijicon, but their price points were significantly higher. The Holosun HS403C 1x 2 MOA Red Dot Sight seemed to offer a good balance of features and affordability, especially since I’d heard positive feedback from fellow range enthusiasts.

The unboxing experience was straightforward. The sight came neatly packaged with a low-profile mount, a lower 1/3 co-witness mount, a lens cloth, a CR2032 battery, a rubber cover, a T10 L Key, and a user manual. The sight itself felt surprisingly solid for its size and weight (2.82 oz), with a clean, black anodized finish. Compared to a Bushnell TRS-25 I’d briefly used, the Holosun felt more refined and the included mounting options provided more flexibility.

My first impression was one of cautious optimism. I was excited by the features and price point but also a little wary of whether it would hold up to real-world use. I was hoping for something dependable and easy to use.

Real-World Testing: Putting Holosun HS403C 1x 2 MOA Red Dot Sight to the Test

First Use Experience

My initial testing of the Holosun HS403C 1x 2 MOA Red Dot Sight took place at an outdoor shooting range. I mounted it on my AR-15 using the lower 1/3 co-witness mount. The setup was quick and easy, and I was able to zero the sight in about 15 minutes at 50 yards.

The conditions were sunny with a slight breeze. The 2 MOA dot was crisp and clear, even in bright sunlight. Adjusting the brightness settings was simple, and I found a comfortable level for both daytime and dusk conditions. I ran about 200 rounds through my rifle, focusing on speed drills and accuracy at various distances. The red dot allowed for significantly faster target acquisition compared to my old iron sights. There were no initial issues, and the sight held zero perfectly.

Extended Use & Reliability

After several months of regular use, the Holosun HS403C 1x 2 MOA Red Dot Sight has proven to be a reliable optic. I’ve used it in various conditions, including a light rain and dusty environments, and it has continued to perform flawlessly. The finish has held up well, with no noticeable scratches or wear marks.

Maintenance has been minimal; I simply wipe the lens with the included cloth after each range session. I’ve also replaced the battery once, which is expected given the long but finite lifespan. Compared to a cheaper red dot I used years ago that lost zero after every range trip, the Holosun has been a significant upgrade. It inspires confidence and has enhanced my shooting experience.

Breaking Down the Features of Holosun HS403C 1x 2 MOA Red Dot Sight

Specifications

• Magnification: 1x. This provides a true, unmagnified view, which is ideal for close-quarters engagements and rapid target acquisition.
• Objective: 20 mm. This provides a decent field of view while keeping the optic compact and lightweight.
• Eye Relief: Unlimited. This allows for flexible mounting positions and comfortable shooting from various stances.
• DOT Size: 2 MOA. This is a good balance between precision and visibility, allowing for accurate shots without obscuring the target.
• Tube Diameter: 20mm. This is the standard micro red dot size allowing for use with aftermarket mounts.
• Length: 2.57″. This compact size makes it ideal for a variety of firearms without adding excessive bulk.
• Weight: 2.82 oz. Its lightweight design doesn’t add significant weight to the firearm.
• Finish: Black Anodized. The black anodized finish provides a durable and corrosion-resistant coating.
• Battery: CR2032. This common battery type offers long run times, up to 50,000 hours.

These specifications combine to create a lightweight, durable, and user-friendly red dot sight. The unlimited eye relief and 2 MOA dot make it easy to acquire targets quickly and accurately, enhancing the overall shooting experience.

Performance & Functionality

The Holosun HS403C 1x 2 MOA Red Dot Sight performs admirably in its intended role. The 2 MOA dot is sharp and easily visible, even in bright sunlight, and the 12 brightness settings provide ample adjustment for different lighting conditions. Its ability to hold zero after hundreds of rounds is commendable.

The only minor weakness I’ve found is that the brightness adjustment buttons can be a little small and difficult to manipulate with gloved hands. Overall, the sight exceeds my expectations for a red dot in this price range.

Design & Ergonomics

The build quality of the Holosun HS403C 1x 2 MOA Red Dot Sight is impressive. The materials feel solid and durable, and the sight is lightweight and well-balanced. The sight is easy to mount and zero, and the controls are intuitive.

The learning curve is minimal, even for someone new to red dots. The unlimited eye relief makes it forgiving to use, and the crisp dot enhances accuracy.

Durability & Maintenance

The Holosun HS403C 1x 2 MOA Red Dot Sight appears to be built to last. After months of use, it shows no signs of significant wear and tear. Its rugged construction instills confidence in its long-term reliability.

Maintenance is simple, requiring only occasional lens cleaning. The long battery life minimizes the need for frequent battery changes.

Accessories and Customization Options

The Holosun HS403C 1x 2 MOA Red Dot Sight comes with a low-profile mount and a lower 1/3 co-witness mount. These options provide flexibility for mounting on different firearms and achieving the desired cheek weld. The sight is compatible with any standard micro red dot mount (T1 pattern).

The 20mm tube diameter also makes it compatible with various aftermarket accessories. It integrates well with magnifiers from other brands, extending its effective range.

Pros and Cons of Holosun HS403C 1x 2 MOA Red Dot Sight

Who Should Buy Holosun HS403C 1x 2 MOA Red Dot Sight?

The Holosun HS403C 1x 2 MOA Red Dot Sight is perfect for: home defense users, recreational shooters, and hunters seeking a reliable and affordable red dot optic. It’s also suitable for law enforcement or military personnel who need a dependable sight for their patrol rifle or carbine.

Who should skip this product? Those requiring extreme durability for heavy combat use might consider higher-end options.

Must-have accessories or modifications? A quality lens cleaning solution and a durable mount (if the included mounts don’t meet your needs) are recommended.

Conclusion on Holosun HS403C 1x 2 MOA Red Dot Sight

The Holosun HS403C 1x 2 MOA Red Dot Sight is an outstanding optic that delivers exceptional value. At $158.99, it offers performance and features comparable to sights costing significantly more.

The price is absolutely justified given the quality, durability, and performance.

I would wholeheartedly recommend it to anyone looking for a reliable and affordable red dot sight. It’s a fantastic upgrade for any firearm, offering faster target acquisition and improved accuracy. Don’t hesitate; this is an optic that will serve you well.