Updated September 19, 2018 by Brett Dvoretz

The 10 Best Boresighters

video play icon
Best High-End
Best Mid-Range
Best Inexpensive

This wiki has been edited 17 times since it was first published in September of 2015. 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

9. Ade Advanced Optics Universal

8. Romeker Green Laser

7. Sightmark Triple Duty Universal

6. Bushnell Professional Kit

5. SiteLite Mag SL-100

4. Laserlyte MBS-1

3. Wheeler Professional

2. P2M In-Chamber

1. SiteLite Ultra Mag SL-500

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.

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.)

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.

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.

This includes everything from a fighter aircraft to an attack helicopter to the main gun of a battle tank.

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.

Statistics and Editorial Log

Paid Placements

Recent Update Frequency

Brett Dvoretz
Last updated on September 19, 2018 by Brett Dvoretz

A wandering writer who spends as much time on the road as in front of a laptop screen, Brett can either be found hacking away furiously 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 has been a professional chef, a dog trainer, and a travel correspondent for a well-known Southeast Asian guidebook. He also holds a business degree and has spent more time than he cares to admit in boring office jobs. He has an odd obsession for playing with the latest gadgets and working on motorcycles and old Jeeps. His expertise, honed over years of experience, is in the areas of computers, electronics, travel gear, pet products, and kitchen, office and automotive equipment.

Thanks for reading the fine print. About the Wiki: We don't accept sponsorships, free goods, samples, promotional products, or other benefits from any of the product brands featured on this page, except in cases where those brands are manufactured by the retailer to which we are linking. For our full ranking methodology, please read about us, linked below. The Wiki is a participant in associate programs from Amazon, Walmart, Ebay, Target, and others, and may earn advertising fees when you use our links to these websites. These fees will not increase your purchase price, which will be the same as any direct visitor to the merchant’s website. If you believe that your product should be included in this review, you may contact us, but we cannot guarantee a response, even if you send us flowers.