How to Use A Laser Bore Sight for an AR-15: Tips You Probably Don’t Know

In order to be as accurate as possible, you need to bore sight your weapon. Realistically, you should do this on all of your weapons, and it’s essentially mandatory for hunters and target-shooting enthusiasts. With the AR-15 being one of the most popular rifles in this country, we’re here to help you understand how to use a laser bore sight with your own AR-15. We’re going to walk you through how to do it and explain everything you need to know about AR 15 bore sighting.

What is AR-15 bore sighting and why it is important?

Before you learn how to use a laser bore sight[1] AR-15 you need to know why this process is so important. Boresighting lines up the center of the barrel with the scope (or sight) of your weapon. As such, the accuracy is at the highest level possible. Both experts and beginners participate in this “zeroing in” process. It helps you get a more accurate shot, decreases wasting the ammo, and improves your success when hunting or when shooting in the targets.


There are two methods you can use. The first one is using your eye. You will need to remove the bolt and look through the barrel. Adjust the sight accordingly and you are done. But, this isn’t the most accurate method. A more preferable method is using laser sighters.
In general, you can use both of these methods. However, when it comes to AR15, the latter is more appealing. This rifle doesn’t allow you to remove the bolt and look through the barrel in seconds. This is a complicated process. On the other hand, using a laser sighter is much easier, simpler, and more accurate. Luckily, we have already tested the best AR-15 bore sights on the market to make your life easy!

What is laser bore sight?

How to use lasers bore sight AR 15

A laser bore a sight is a tool or a gadget if you prefer that looks like a bullet or at least has the same dimensions. Some, more generic models come with large dimensions. They can be much longer than bullets if they do not have to be inserted into the barrel through the bolt! These models will be inserted into the barrel through the muzzle[2] They have 2 contact points. Most units these days come with adapters allowing you to use the same unit for caliber 20-50.

A laser bore sight has a laser that can be manually activated once the unit is in the barrel. It will display the red dot vs scope on the target. This is the center of the barrel and it should be lined up to the sight or your optics.

These accessories for your rifle may look simple and ordinary, but they are very important and they do come with impressive precision. Almost all are made from metal or aluminum in order to avoid flexing and compromising the center of the barrel.

Some of you already know the benefits of using Lasers for M&P Shield 9mm, but you may wonder are laser bore sights worth it. The answer is eyes. As we have mentioned earlier, the only other alternative is to use your eye to find the center of the barrel and align the scope or sight. Unless you are a professional with years of experience, this won’t be easy or accurate! A laser bore sight can help you get a professional outcome despite the lack of experience.

Boresighting AR 15

Here is the main section and the one you have been looking for the most. Here we will give you steps you need to take in order to complete the boresighting process successfully, in less time, and to learn how you can do the same process the next time. Follow all the steps and you’ll become a AR 15 bore sighting master!

  1. Always unload your weapon first! This is mandatory and there are no exceptions.
  2. Charge the battery on your laser boresight if needed. They either have replaceable batteries or will use a USB cable.
  3. Secure your rifle. You can use bags of sand or special holders that will secure it in place and won’t allow the rifle to move.
  4. Hang the target 25 yards away from the rifle. Consider grabbing a 25 or 50 yard zero target for your shooting.
  5. Open the bolt on your rifle and place the boresight inside.
  6. Close the bolt. You will see the laser dot[3]
  7. You will see that the laser dot is on the target. Some boresights come with special targets that have 1-inch squares.
  8. Line the laser dot in the center of the target. It can fill the entire circle.
  9. Use elevation and windage knobs on your scope or the bolts on the sights to adjust them accordingly. In general, the laser dot should line up perfectly with the reticle. Take as much time as you need.

When finished, remove the boresight and insert live ammunition. These steps will work for all Types of Sights! Test the weapon and examine the results. If the weapon isn’t accurate, repeat the process and try to find the problem.

Unless you’re not a big fan of your eyesight to begin with, don’t try to do this in the bright of the day. Rather, we recommend that you do this in the morning or in the evening. It just makes things easier and can help you avoid any complications.

An interesting fact is that many boresights come with adapters. This is useful if you have multiple rifles and you want to use one unit to zero in all of them. Come on y’all, make your life easier. Select and screw down the correct adapter to the boresight to speed up this process. However, there is more to getting a sight calibrated than just boresighting. You also need to know Which way to move rear sights to get it set just right!

Frequently Asked Questions

Can you bore sight at 25 yards?

Yes, you can definitely bore sight at 25 yards. Bore sighting is the practice of aligning the sights or crosshairs of a firearm with the barrel, so that the firearm is accurately aimed when fired. The purpose of bore sighting is to eliminate or reduce the need to aim the firearm after sighting in, which can be done at a closer distance. For most people who simply shoot at the range or use their weapon for self-defense, 25 yards is great!

Is bore sighting accurate?

Bore sighting is very accurate. The purpose of bore sighting is to reduce the amount of time and ammunition needed to zero in on a target. When a rifle is correctly bore sighted, shots taken at close range (within 50 yards) should be within 2-3 inches of center mass.

Is laser bore sighting good enough?

Yes, bore sighting is good enough to get your sight zeroed. However, I always recommend firing a few test shots to confirm your zero. Testing your sights periodically is a great practice to improve accuracy.

The final word

The answer to how to use a laser bore sight AR 15 question isn’t long simply because this is a simple process that will require a few minutes of your time. However, it is extremely important, it is beneficial and it is a cheap way you can make your weapon more accurate and boost your performance or your hunting success. Follow this process for all of your weapons, and your friends will marvel at your accuracy.

About the author

Patrick Howard

I have been working as a gunsmith for 20 years. Rain, fog, moisture, high temperature, or even snow are all the things a product must withstand in order to be recommended by me.

Leave a Comment