Zeroing sights and optics without a laser bore sight can be challenging. Usually it takes several shots. Sometimes your first shots won’t even be on paper. So then you have to make best guesses as to what adjustments you need to make.
Laser bore sights take the pain out of zeroing your sights and optics. They can also save you some rounds, since your first shots will be much closer to the center of the target. Once you’ve made your adjustments with a laser bore sight, you’ll just need to take a few test shots and make fine tuning adjustments.
Just remember that a laser bore sight is not a replacement for a true tested zero with your favorite ammunition. Lasers travel in a perfectly straight line. Bullets do not. So, the longer the range, the further your laser boresight is going to be from the point of impact.
Typically, at very long ranges, the point of impact will be lower than the laser bore sight point.
Also, lasers don’t stay lasers forever. The light disperses over long distances and the laser stops producing a clean dot. At long ranges, even with a reflective target and good optics, the laser can be difficult to see.
So a laser bore sight is a great piece of gear to have in your kit. But you’ll still need a handful of rounds to get your sights dead on.
Our Best Choice
Spoiler: If you’re in a hurry, the LaserLyte Universal Bore Sight Kit is the best option in this article, in terms of cost and performance.
We’ll cover the best bore sights to add to your gear bag to help you get off the sighting bench and over to the competition table or out in the field faster.
Our Top Models
The 9 Best Laser Boresight Reviews of 2021
1. LaserLyte Universal Bore Sight Kit: Best Value Laser Bore Sight
The LaserLyte Universal Bore Sight Kit has the best range and adaptability for using on multiple rifles.
The LaserLyte comes with 4 adjustable arbor adapters for use on firearms from .22 to .50 caliber. The alignment shaft is short enough to accomodate barrels as short as 3 inches, so it’s viable for most pistols, as well.
The class III laser is powerful enough to see at 100 yards. However, the dot can be tough to spot in daylight. But at an indoor shooting range, it’s no problem.
Although the mounting system is versatile, the screws on the arbors are very small and it takes a bit to get the LaserLyte setup for different calibers. However, once the unit is on the gun, operation is simple.
If you have multiple rifles and you want to use your laser bore sight at 100 yards, this is the most best option for the money.
- Fits just about any gun
- Laser is visible out to 100 yards
- Simple operation
- Setup is complex
- Laser is hard to see at max range in daylight
2. ADAFA.Z Bore Sight Kit: Budget Laser Bore Sight
The ADAFA.Z Bore Sight Kit is one of the least expensive bore sights available. However, it comes with a nice range of options for a boresight at this price.
First, the ADAFA.Z is available with a red or green laser. Green lasers produce better contrast than red lasers. They’re also easier to see in daylight, as long as the laser is powerful enough.
So, if you sight your rifles at an outdoor range, the green laser may be a better option for you.
The laser is class II, which means it’s not tremendously powerful. The dot is completely visible to about 25 yards. After that, the laser starts to diffuse and it can be difficult to see.
The ADAFA.Z uses an arbor fitting system, which enables it to work in firearms from .22 to .50 caliber, including pistols. However, the ADAFA.Z will only fit in barrels that are 3 inches or longer.
The only trouble with this model is that it’s not easy to use. The screws for the arbors are small and the on/off switch could be more ergonomic.
However, it works well enough and offers a lot of versatility for the price.
- Very affordable
- Green or red laser options
- Fits a wide range of firearms
- Laser has limited range
- Not a very intuitive unit
3. Sightmark Boresight: Cartridge Style Bore Sight
The Sightmark Boresight sits in the chamber of your rifle rather than the muzzle. It’s shaped just like a round.
One of the benefits is that it’s incredibly intuitive to use. Just put the battery in and insert the boresight the same way you would insert a round. It’s very fast and easy.
Cartridge style laser bore sights are also super compact. You can easily keep it in your pocket.
Since it fits in the chamber exactly where an actual round would sit, this model is very accurate, as well.
However, the simplicity has a few drawbacks.
First, there is no on/off switch. To turn the Sightmark off, you need to take the battery out.
Also, each cartridge style bore sight only fits one caliber. Sightmark makes these bore sights for multiple calibers, including pistol calibers. But you have to purchase each one separately. So the price goes up if you need to bore sight multiple calibers.
The small form factor means that the battery is also small. So the operating life is only an hour or so.
However, the laser is class III, which is fairly powerful for such a small bore sight. The laser holds its point out to about 50 yards.
Overall, this is a solid option for shooters looking for a simple, affordable boresight. However, there are more versatile options for those who have a lot of different rifles.
- Very simple operation
- Excellent accuracy
- Powerful laser for the size
- Only fits one caliber without purchasing additional units
- No on/off switch
4. Sightmark Triple Duty Universal Bore Sight: Most Versatile Bore Sight
This unit attaches to the barrel with a magnet and an auto-centering arbor. Setup takes a couple of seconds. Literally.
The mounting system and size also make this model excellent for use on both pistols and rifles.
The Triple Duty comes with a green, class III laser that’s visible beyond 50 yards and offers good contrast in daylight. However, the dot gets a bit difficult to see at 100 yards.
The main trouble with the Triple Duty is that the pivot that aligns the laser with the bore is fairly short. So some inaccuracy is possible. The best method is to sight in with the laser at 25 yards, then move the target back to 50 yards to ensure that your first sighting shots are good.
Also, the Triple Duty won’t work with an aluminum muzzle device. Aluminum is non-magnetic, so the mounting system is ineffective.
The battery life is enough to sight in a few guns. However, changing the battery isn’t all that easy, as the battery compartment is tight and the cover can be finicky.
Even with the shortfalls, this is easily the best option for shooters who have several different firearms they need to zero in.
Product seems to be unavailable
Updated product link. Amazon restocks these on Jan 7.
- Super simple setup and operation
- Works on almost any firearm
- High-visibility green laser
- Mounting system is versatile, but can be inaccurate
- Battery changes are challenging
5. Bushnell Boresighter Kit: Most Complete Laser Bore Sight Kit
The Bushnell Boresighter Kit is designed for the professional who wants accurate sighting every time.
The kit fits calibers from .22 to .45. Rather than use a single alignment rod with adapters, the Bushnell kit includes three expandable arbors for more precise bore fit. The arbors will fit any barrel longer than 3 inches. So this unit will work with pistols as well.
Bushnell also includes a graduated grid sighting reticle to help calculate adjustments and build your range card.
The class III laser is visible out to 100 yards. The dot is fairly easy to see even at 100 yards in daylight.
This kit also includes a carrying case. It’s a bit bulky, but practical.
Overall, the Bushnell kit is best for advanced shooters who need a high precision laser boresight.
- Excellent precision and bore fit
- Strong laser and long range visibility
- Graduated grid sighting reticle makes adjustments easy
- Not for beginners
- Lots of gear for a laser bore sight
6. SiteLite Mag Laser Boresighter: Most Accurate Laser Bore Sight
SiteLite produces laser bore sights for the U.S. military. The SiteLite Mag Laser Boresighter is designed with the same durability and performance as it’s military counterparts.
The Mag fits .22 to .50 caliber rifles, and 12 and 20 gauge shotguns.
The class IIIa laser is incredibly powerful. It produces a visible red dot at 100 yards, even in daylight. SiteLite also offers the Mag with a green laser. However, the SiteLight Ultra Mag Green Laser Bore Sight is quite a bit more expensive.
What separates this model from the others is that SiteLite includes software for printing out zero targets specifically for your round type, which works as an adjustment cheat sheet.
Additionally, the Mag comes with a scope leveler, so you can level your crosshairs without even turning the laser on.
Lastly, this bore sight has a two hour battery life, which is more than enough to sight in a handful of guns.
The Mag is the best laser bore sight for shooters who want an accurate bore sight that also makes zeroing easy.
- Fits a wide range of firearms
- Excellent laser visibility
- Includes useful accessories and software
- Expensive, and the green laser version is even more expensive
7. Wheeler Engineering Professional Laser Boresighter: Magnetic Laser Bore Sight
The Wheeler Engineering Professional Laser Boresighter combines ease of use with excellent performance.
The most prominent feature of the Wheeler is the magnetic connection to the muzzle. It’s fast, and more accurate than any other magnetic bore sight.
The class IIIR green laser produces a clean dot at 100 yards and is easy to see in daylight. Wheeler also includes a reflective target, which makes the laser even easier to see.
One downside of this unit is that it’s a bit bulky. It will attach to any handgun. But it’s a bit too big to be practical for zeroing small guns.
The powerful laser eats up batteries. However, the battery life is long enough to zero a few guns.
The size and performance combination make the Wheeler the best option for shooters who want a simple, but capable, boresight for their rifles and shotguns.
- Easy to use
- Powerful, daylight visible green laser
- Includes reflective target grid
- Too bulky to comfortably use on pistols
- Battery life is a tad short
All Zeroed In
Using a laser bore sight is all about efficiency. Rather than using ammunition to get shots on paper, a laser bore sight enables you to start on paper and take a few shots to fine tune your zero.
Over the course of its lifetime, a good laser bore sight will easily pay for itself in saved ammunition.
To that end, most shooters will get the best value from the LaserLyte Universal Bore Sight Kit. It’s affordable and can pay for itself, probably several times over, during its service life.
So, pick up a laser bore sight and start using your rounds to get hits rather than adjusting your optics.