First Thoughts on the Sightmark 300 Blackout / 7.62x35mm 5mW Red Laser Boresighter
The 300 Blackout cartridge has exploded in popularity, offering versatility from supersonic to subsonic loads. As an experienced firearms enthusiast, I’m always looking for tools that simplify the sighting-in process. The Sightmark 300 Blackout / 7.62x35mm 5mW Red Laser Boresighter promises just that, offering a quick and easy way to get on paper without wasting valuable ammunition.
My need for this product stemmed from the frustration of burning through boxes of ammo just to get a new optic roughly zeroed on my 300 BLK AR. I wanted a tool to get me close enough to then fine-tune at the range. I’ve used traditional boresighters before, but a chamber-style laser boresighter specifically for 300 Blackout seemed like a more precise and efficient solution.
Unboxing the Sightmark boresighter, the first thing I noticed was the brass construction. It felt solid enough, though lightweight. The included carrying case is a nice touch for protection. My initial thought was, “Hopefully, this small device can save me a big headache (and a pile of ammo) at the range.”
I was also considering a universal laser boresighter, but I opted for this Sightmark model because it’s specifically designed for the 300 Blackout/7.62x35mm cartridge. I expected a more precise fit and alignment compared to a generic option. I was definitely excited at the prospect of a fast and easy zeroing process.
Real-World Testing: Putting Sightmark 300 Blackout / 7.62x35mm 5mW Red Laser Boresighter to the Test
First Use Experience
I tested the Sightmark 300 Blackout / 7.62x35mm 5mW Red Laser Boresighter at my local indoor shooting range. The controlled environment eliminated variables like wind and varying light conditions. Inserting the boresighter into the chamber was simple. The red laser was immediately visible on the target at 25 yards.
The laser dot was bright and easily distinguishable, even under the range’s fluorescent lighting. I made adjustments to my optic based on the laser’s point of impact. The most surprising thing was how quickly I was able to get the crosshairs aligned.
Extended Use & Reliability
After using the Sightmark boresighter over several range sessions spanning three months, it’s proven to be a valuable tool. It’s held up well with no noticeable wear and tear. The brass casing still looks new. I store it in the included case when not in use.
The boresighter is simple to wipe down with a cloth if needed. I’ve compared it to other traditional methods and this has saved me time. The process is now more streamlined and less wasteful. This Sightmark has outperformed my initial expectations, giving me a solid baseline for zeroing.
Breaking Down the Features of Sightmark 300 Blackout / 7.62x35mm 5mW Red Laser Boresighter
Specifications
- Caliber: 7.62x35mm (300 Blackout) ensures a perfect fit in your 300 BLK chamber. This is crucial for accurate alignment.
- Style: Laser offers a clear visual reference point for quick adjustments. The laser simplifies the initial zeroing process.
- Material: Brass construction provides durability and a cartridge-like feel. Brass is also non-corrosive and easy to clean.
- Battery: 3 AG3 batteries power the 5mW red laser. This provides sufficient brightness for indoor and low-light conditions.
- Range: 15-100 yards. This range is suitable for initial sighting, before fine-tuning with live ammunition.
These specifications matter because they directly influence the accuracy and ease of use of the boresighter. The correct caliber ensures proper chambering. The laser type provides a clear aiming point, and the battery life determines usage duration.
Performance & Functionality
The Sightmark 300 Blackout / 7.62x35mm 5mW Red Laser Boresighter performs its job effectively. It provides a quick and easy way to roughly zero an optic. It definitely reduces the number of rounds needed to get on paper.
The main strength is its simplicity. It’s simple to insert and use. The primary weakness is its dependence on battery power. Always carry spares. It definitely meets my expectations as a preliminary zeroing tool.
Design & Ergonomics
The brass construction feels solid and cartridge-like. The weight is negligible. This mimics a real round, which allows the firearm to cycle as if one was loaded.
The Sightmark boresighter is extremely user-friendly. The learning curve is nonexistent. It’s a simple drop-in and adjust device.
Durability & Maintenance
The brass material suggests reasonable longevity. It should last for years with proper care. Maintenance is minimal. Simply wipe it down after use.
Accessories and Customization Options
The Sightmark 300 Blackout / 7.62x35mm 5mW Red Laser Boresighter comes with a carrying case and three AG3 batteries. There are no other specific customization options. No significant aftermarket accessories are necessary for this product.
Pros and Cons of Sightmark 300 Blackout / 7.62x35mm 5mW Red Laser Boresighter
Pros
- Easy to Use: Simple drop-in design with no complicated setup. This makes it quick and easy to use for anyone.
- Saves Ammunition: Significantly reduces the number of rounds needed for initial zeroing. This alone justifies the purchase price.
- Compact and Portable: The included carrying case makes it easy to transport and store. Take it to the range or keep it in your gun bag.
- Specific to 300 Blackout: Designed specifically for the 300 Blackout chamber, ensuring accurate alignment. No more guesswork.
- Affordable: At $29.99, it’s an inexpensive tool that provides significant value. A small price for saving ammo and time.
Cons
- Battery Dependent: Requires batteries, which can die unexpectedly. Keep extra batteries on hand.
- Limited Range: Only effective for initial zeroing at shorter distances (15-100 yards). Fine-tuning with live ammunition is still required.
Who Should Buy Sightmark 300 Blackout / 7.62x35mm 5mW Red Laser Boresighter?
Perfect for: 300 Blackout owners, hunters who frequently change optics, competitive shooters looking to save time and ammo, and anyone who wants a quick and easy way to roughly zero their rifle.
Who should skip this product? Those who rarely shoot their 300 Blackout rifle, experienced shooters who prefer traditional methods, or individuals who only shoot at very long ranges where initial boresighting accuracy is less critical.
Must-have accessories or modifications? Extra AG3 batteries. That is really the only thing needed to ensure continuous use.
Conclusion on Sightmark 300 Blackout / 7.62x35mm 5mW Red Laser Boresighter
The Sightmark 300 Blackout / 7.62x35mm 5mW Red Laser Boresighter is a valuable tool for any 300 Blackout owner. It offers a quick, easy, and cost-effective way to get your rifle roughly zeroed. This reduces wasted ammunition and time at the range.
The $29.99 price is easily justified by the ammunition savings alone. I would definitely recommend this boresighter to anyone who owns a 300 Blackout rifle and wants to simplify the sighting-in process. Get yours today and start saving money and time at the range!