The 10 Best Boresighters

Updated March 12, 2018 by Brett Dvoretz

10 Best Boresighters
Best High-End
Best Mid-Range
Best Inexpensive
We spent 42 hours on research, videography, and editing, to review the top choices for this wiki. Competitive sporting shooters will truly appreciate the accuracy delivered by these laser boresighters, which will have you hitting the target first time more often. They make it easy to align your firearm barrel and sights, which makes zeroing so fast you'll be able to spend more time honing your sharpshooting skills. When users buy our independently chosen editorial picks, we may earn commissions to support our work. Skip to the best boresighter on Amazon.

10. CenterPoint Laser

The CenterPoint Laser saves you ammo by eliminating wasted shots trying to home in on a target. The laser shows you exactly where your volley will land before you shoot, so you can make adjustments. It requires a barrel that is a minimum of 3.8 inches.
  • 100-yard nighttime visibility
  • quick scope sight alignment
  • adapters can get stuck
Brand Center Point
Model CPLBS1745
Weight 1.4 pounds
Rating 3.5 / 5.0

9. Ade Advanced Optics Universal

The daylight-visible green laser on the Ade Advanced Optics Universal runs on a single lithium CR2 battery that should last long enough to calibrate a large arsenal. It attaches magnetically to your muzzle to ensure precise alignment.
  • compact and easy to store
  • won't damage your bore
  • can't stick to certain metals
Brand Ade Advanced Optics
Model HG10
Weight 2.4 ounces
Rating 4.0 / 5.0

8. Romeker Green Laser

The Romeker Green Laser doesn't have the most powerful beam, rated at less than 1mW, so it isn't great for use in full sunlight unless your target isn't too far away. It does offer a lot of barrel size versatility and comes in at a low price, though.
  • rust-resistant aluminum body
  • includes a battery
  • feels well-made
Brand ROMEKER
Model pending
Weight 5.3 ounces
Rating 3.7 / 5.0

7. Sightmark Triple Duty Universal

The reliable Sightmark Triple Duty Universal is one of the fastest gun zeroing and sighting systems, and is more accurate than arbor-type units. The simple design will work with all your rifles and pistols, making it a great choice for competitive shooters.
  • bright red laser
  • simple magnet attachment
  • batteries are difficult to install
Brand Sightmark
Model SM39024
Weight 0.8 ounces
Rating 3.7 / 5.0

6. Bushnell Professional Kit

The Bushnell Professional Kit has a sleek, streamlined design, and a durability like few others. It includes three expandable arbors to fit a variety of barrels, and the quality optics provide stunning HD clarity and should get you on the paper every time.
  • graduated grid sighting reticle
  • attractive carrying case
  • will not work with any raised scopes
Brand Bushnell
Model 743333
Weight 15.2 ounces
Rating 4.2 / 5.0

5. SiteLite Mag SL-100

The SiteLite Mag SL-100 guarantees superior accuracy and includes adapters to fit a wide range of guns, from .22 to .50 caliber, as well as 20- and 12-gauge shotguns. While it seems sturdy enough to last through years of use, it comes with a lifetime warranty just in case.
  • 5 mw power output
  • includes a helpful scope leveler
  • doesn't move once inserted
Brand SiteLite
Model SL-100
Weight 14.4 ounces
Rating 5.0 / 5.0

4. Laserlyte MBS-1

The Laserlyte MBS-1 has a patented one-piece design that is easy to use and perfect for beginners. It offers a 500-yard nighttime range, so you can ensure accuracy on faraway targets, and it's compatible with a variety of adapters that are available separately.
  • precision calibrated
  • quality usa craftsmanship
  • for barrels at least 3 inches long
Brand LaserLyte
Model MBS-1
Weight 3.2 ounces
Rating 4.9 / 5.0

3. Wheeler Professional

With the Wheeler Professional scope adjustments are fast and simple. It uses a high-power, daylight-visible green laser and a magnetic connection that sticks to the end of the barrel for more precise alignment. It is conveniently compatible with a wide range of gun types.
  • protective rubber overmolding
  • includes a lithium battery
  • durable machined aluminum body
Brand Wheeler
Model 589922
Weight 1.3 pounds
Rating 4.6 / 5.0

2. P2M In-Chamber

The P2M In-Chamber will help you get that 12-gauge homed in on the target in no time. At less than three inches long, it is small enough to fit in your pocket, so you can keep it handy at all times, whether in the field or at a range.
  • sits firmly in the bore
  • alignment holes on the side
  • extremely affordable
Brand P2M
Model P2M39007
Weight 0.3 ounces
Rating 4.7 / 5.0

1. SiteLite Ultra Mag SL-500

The SiteLite Ultra Mag SL-500 fits all the most popular calibers of guns and projects a powerful, class IIIa, green laser that can be seen downrange easily. It comes with the SiteLite BTS program, which allows you to print rifle- and ammo-specific targets.
  • 15-hour battery life
  • used by the us navy and usmc
  • works in full sunlight
Brand SiteLite
Model SL-500
Weight 2.3 pounds
Rating 4.7 / 5.0

Choosing The Best Boresighter

Using a boresighter is a great way to ensure that your rifle or pistol's sight or scope is as perfectly aligned as possible. Boresighters allow for accurate zeroing in without the need for lots of shots fired, which means less wasted ammunition and which allows for the proper sight alignment of a firearm even when you're not at a shooting range or out in the field.

In fact, the investment you make in a laser boresighter will almost always pay for itself in terms of all those rounds you don't have to fire; this savings may take a while to accrue if you are shooting a .22 caliber rifle, but it is especially true with something like a .50 caliber BMG rifle, a weapon for which each round can cost more than five dollars.

And in fact, not all boresighters are even that much of an investment. You can get a decent laser boresighter for less than fifty dollars and acquire a tool that is suitable for most uses, such as sighting in a hunting rifle or making sure a pistol that will be used for home defense purposes is accurate enough to prevent errant shots at close range. If you are going to get a lower cost boresighter, make sure it offers at least a few features such as adaptability with various types of sights, such as an optical scope, a laser dot, or the iron sights that likely come as the stock option of your firearm.

Keep in mind that while many lower cost boresighters are perfectly suited for most shooters, they may not produce a laser that is readily visible in bright sunlight (at least not at far ranges) and they might not work well enough for competitive sport shooting or for tactical purposes.

For the shooter who demands the best possible accuracy from his or her weapons, a high end boresighter is a must. You will spend well over one hundred dollars for a great sighting tool, but top-of-the-line laser boresighters can be used in broad daylight with a green laser or in lower light with a red laser, and they can be used in all sorts of different weapons.

Consider an option that adheres to a barrel magnetically, as it can be rapidly installed and removed, allowing for fast and accurate sighting in multiple weapons. It also eliminates the potential for scratched rifling that can affect the ballistics of bullet's flight.

However, it must be noted that magnetic boresighters can only be used on firearms with muzzles that are perfectly flat (indeed most are). A boresighter that is inserted into a weapon's barrel is a must for any gun with an irregularly shaped flash suppressor, for example.

Using Your New Boresighter

Most boresighters can have a competent shooter hitting the bullseye within three shots. Before worrying about your boresighter, however, you have to establish a proper shooting platform -- if your weapon is not stable, you can never hope to sight it in properly. (With pistols, more often than not you are your own shooting platform; more than three shots will likely be required, as will plenty of patience.)

Use a dedicated rifle mount perched on a shooting table or rifle bipod to get your long gun set up and aimed as accurately as possible at your target. Make sure you have properly measured the distance from your weapon to the target if you are not shooting at a professional range -- even a few feet of improper measurement can render your efforts ineffective.

Be sure to select the right adapter (or make adjustments to an affixed adapter) for your weapon's barrel caliber before inserting the boresighter. Using an adapter that's too small will reduce the efficacy of the sighting process and trying to insert one that is too large can damage the firearm.

The point of a boresighter is to minimize the number of shots you take when zeroing in your sights. Take the time to adjust your sights to align with the laser's dot before your first pull of the trigger. Chances are that your first shot will be near the bullseye, and with slight adjustments, your second will hit dead center.

And of course do not forget to remove the boresighter from a firearm before you begin shooting the weapon. While this step might be hard to overlook with a handgun, a shooter with a rifle mounted on platform just might forget that his or her barrel is obstructed. The result will be a ruined boresighter in the best case scenario, and a badly injured shooter in a more serious situation.

A Brief History Of Boresighting

Use of a boresighter is hardly limited to the shooter hoping to get his or her rifle zeroed in before the hunting season or before a shooting competition, and it is hardly a recently developed technique, either.

In fact, rudimentary bore sighting was first practiced centuries ago by musketeers and cannon crews attempting to get the best aim out of inherently inaccurate weapons. In the early years of the firearm, the issue was less often if a weapon's sights were accurate, but rather whether or not its barrel was anywhere near to being straight.

Bore sighting is also a necessity for proper accuracy with the large weaponry built into military vehicles. This includes everything from a fighter aircraft to an attack helicopter to the main gun of a battle tank. Bore sighting was as necessary a step for the planes flying the skies over war torn World War II as it is for the advanced vehicles prowling the air and the ground in today's battlefield. And even today, most bore sighting is conducted by a person physically inserting a boresighting device into the barrel (also known as the bore, of course) of a gun or cannon.


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Last updated on March 12, 2018 by Brett Dvoretz

A wandering writer who spends as much time on the road as behind the computer screen, Brett can either be found hacking furiously away at the keyboard or perhaps enjoying a whiskey and coke on some exotic beach, sometimes both simultaneously, usually with a four-legged companion by his side. He hopes to one day become a modern day renaissance man.


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