---
product_id: 1304597
title: "223, 5.56x45 NATO Boresight with Red Laser"
brand: "sightmark"
price: "S$69"
currency: SGD
in_stock: true
reviews_count: 11
category: "Sightmark"
url: https://www.desertcart.sg/products/1304597-223-5-56x45-nato-boresight-with-red-laser
store_origin: SG
region: Singapore
---

# 5mW Class IIIA Red Laser 15-100 yd Precision Range Durable Brass Construction 223, 5.56x45 NATO Boresight with Red Laser

**Brand:** sightmark
**Price:** S$69
**Availability:** ✅ In Stock

## Summary

> 🎯 Zero in like a pro—precision meets portability.

## Quick Answers

- **What is this?** 223, 5.56x45 NATO Boresight with Red Laser by sightmark
- **How much does it cost?** S$69 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/1304597-223-5-56x45-nato-boresight-with-red-laser)

## Best For

- sightmark enthusiasts

## Why This Product

- Trusted sightmark brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Endure:** Rugged brass body withstands recoil and rough field conditions for lasting accuracy.
- • **Trusted by Pros:** NTOA recommended and top-rated by hunters and competitive shooters alike.
- • **Save Ammo, Save Time:** Cut down wasted cartridges with swift, exact sight alignment—hunt smarter, not harder.
- • **Compact & Travel-Ready:** Lightweight design and included carrying case make it your go-to on every expedition.
- • **Pinpoint Precision Every Time:** Harness a 5mW red laser for flawless zeroing without firing a shot.

## Overview

The Sightmark .223, 5.56x45 NATO Boresight features a 5mW Class IIIA red laser with a 15 to 100-yard sighting range, housed in durable brass for reliable zeroing without firing. Compact and travel-friendly, it reduces ammo waste and is trusted by professionals for precise sight alignment.

## Description

desertcart.com The Sightmark Laser Boresight provides a convenient, accurate, and cost effective method for sighting in rifles and shotguns of all types. Easy-to-use, simply chamber the boresight like a regular bullet and a laser dot will show exactly where the rifle is aiming--without firing a single shot. Perfect for hunters, competitive shooters, and law enforcement, the Sightmark Laser Boresight offers a 15 to 100 foot sighting range with a 632 to 650 nm laser wavelength. The boresight comes with a lightweight carrying pouch to protect the laser for in the field.Specifications:Laser Wavelength (nm:) 632 to 650 LED Type: visible red laser Sighting Range: 15 to 100 yards Dot Size: 2 inches at 100 yards Operation: On/Off End Cap Construction: Brass Temperature: -10 to 50 Celsius Power: <5 mW Battery Type: two AG5 or three AG3) Battery Life: one hour Product Description Tested and recommended by the NTOA, the Sightmark.223 Boresight significantly reduces wasted cartridges and shells. Chamber the device in your .223 rifle like a regular cartridge, and a red laser dot shows exactly where you're aiming. Simply adjust your sights or scope, and save your extra ammo for the hunt. Includes a carrying case, three (3) AG3 batteries, and instructions.

Review: Works great. Get the silver oxide SG5 batteries - I have four of the Sightmark laser boresights - the 12 gauge, 9mm, 7.62x39mm, and .223. I had used a Bushnell laser boresight before getting this set of chamber loaded laser boresights. The Bushnell is the kind that you stick into the muzzle end of the gun, fitted with an arbor matched to the barrel size. The problem with this device was that the arbors never fit quite right - they were always either too tight or too loose, plus you had to try to seat the body of the boresight in the center of the opening of the barrel (or muzzle brake) in order to properly align the center axis of the boresight with the center axis of the barrel. This rarely if ever happened just right as the slightest tilt in the seating of this boresight in the barrel would take it off the center axis so that rotating the laser would cause the laser light to mark out a small circle that was several MOA in diameter rather than being dead centered. Ugh. Of course with these chamber loaded laser boresights, there is also the potential for the lasers to be mis-aligned off the center axis. Plus there is the potential for the boresight to not fit the chamber properly. The key is to find a brand that has a measure of quality control so that you aren't stuck with these problems. I read through a lot of reviews before deciding on Sightmark. It is definitely not the cheapest out there. There are so many different brands and generic versions of these chamber loaded laser boresights now that almost look alike, with many much cheaper than the Sightmark. However, it was clear from reading the reviews that as the prices went down, so did the quality control. Several of these cheaper brands came with complaints that the lasers were not aligned to the center axis (resulting in the laser painting a circle as it rotates in the chamber) or that they did not fit properly in the chambers and so would either get stuck or wiggle. I have this theory that the really cheap laser boresights must be factory seconds or some such. I considered the Osprey line with the adjustable arbors, which saves money by allowing you to use one laser bore sight for different calibers. But, the reviews indicated that hassling with arbors would have an effect on accuracy and reliability. I almost got the Firefield, which seemed to have a similar number of decent reviews. Ultimately I decided against it because the entire line is made of an aluminum shell, and I think the brass shell of the Sightmark will hold up better. It should be noted, however, that the 12 gauge Sitemark is made out of aluminum, unlike the others, and is only painted a brass color. The biggest complaint against all of these laser boresighters are the frequent DOA batteries and poor battery life. The Sightmarks all come with alkaline button cell batteries. The small caliber ones (9mm, 7.62mm, .223) come with two AG5 batteries while the 12 gauge came with three AG13 (LR44) batteries. To get you all confused, the printed information on the back of the packaging for the 7.62mm and .223 says you can use 3 AG3 batteries in place of the 2 AG5 batteries (since the AG3 is a thinner battery with the same 7.9mm diameter), while the printed info for the 12 gauge says you can use 2 AG5 or 3 AG13 batteries. This is flat out incorrect since 2 AG5 batteries are too small to fit into the 12 gauge Sightmark battery chamber. Confused? Go to wikipedia and look up the article "List of battery sizes". Scroll down to the section titled "Silver oxide and alkaline cells". The table lists all the different names for each battery, their dimensions, and their mAh power rating. Note how the silver oxide batteries contain 1-1/2 to two times as much energy as the alkaline batteries. So the key is to go out and get some silver oxide button batteries, size SG5 for the AG5 powered Sightmarks and SG13 for the AG13 powered lasers. And don't go to your nearest retail store, since that will cost you an arm and a leg. Google shop for these batteries online. I found two Made in China "brands" one called Vinnic and another by Chung Pak Battery Works which were pretty cheap. The names aren't important, since I'm sure they will change rapidly. Just remember to get some silver oxide batteries online at the same time you are getting these Sightmark bore sights. How well did these Sightmarks work? The very first time I used one (the 7.62x39mm), I plugged in the included AG5 alkaline batteries and the resulting laser light was exceedingly weak. My initial reaction was that this was a bad laser. Then I remembered the silver oxide batteries I had gotten. When I switched out the batteries, the laser suddenly glowed brightly. Later, when this set of silver batteries finally wore down, the laser light faded again. That's a sign to change batteries. The larger AG13 alkaline batteries for the 12gauge shotgun boresight worked reasonably well and are still working as of this writing. Not surprising, since these batteries pack a lot more energy than the small AG5 batteries. As many have noted, the Sightmarks do not have an on-off switch. Once the batteries are screwed in the laser light is on! This is just as well, since the bore sights have to flush fit inside the chamber of the barrel and endure having the bolt and firing pin slammed into them. But you do have to have a plan of action ready so as to not run down your batteries. With one pair of SG5 silver oxide batteries, I was able to adjust the sights for about four guns, each taking about 5-10 minutes. So I am guesstimating a battery life of about 30 minutes with a fresh pair of SG5 silver batteries (the Sightmark packaging claims up to an hour of battery life - hah!). All of the Sightmarks have fit in well, none have gotten stuck (so far), and none have had off-center lasers. These chamber loaded Sightmark boresighters make it easy to dial in a scope, and for fixed sights, they help confirm the aim points. They are much better than the muzzle loaded bore sights, although the total cost is a lot more since they are ammo caliber specific.
Review: I've found these in the chamber type of laser bore sights to work much better than the universal types which hang out from the . - I own several different laser bore sights by Sightmark, in a number of different calibers. I also have one of their universal laser bore sights. I've found all of their products to work quite well so far. I've found these in the chamber type of laser bore sights to work much better than the universal types which hang out from the muzzle. The machining on these in the chamber types by Sightmark is quite good. With the firearm firmly mounted in a heavy bench rest, I've rotated the sight to several positions in the chamber and seen very little change in the point of the dot even at 100 yards, which indcated to me not only a very good machining but also a very good adjustment of the laser within the brass body. One thing to bear in mind with these sights are that while they do feature a rim like a standard cartridge, the sight is not meant to be removed from the chamber by means of the extractor and bolt. While you will get best results by gently letting the bolt close and push the sight snugly into the chamber, the sight will not simply fall out upon opening the bolt and again, it is not meant to be extracted like a standard cartridge. to remove it is best to open the bolt and keep it open while using a cleaning rod from the muzzle end to gently push the sight out from the chamber. Another thing to bear in mind is that none of these types of sights are perfect. They will do a little better than just getting you on paper, but you will still have to go through the usual steps of zeroing your sights or scope. Consider the distance that you are looking to have as the zero. Even though it is a laser, the diameter of the dot will increase over distance as will any very slight variation from true bore line center. Getting on paper and close to target center at 100 yards with such a device is still doing quite well. At 25 to 50 yards though these devices are outstanding. Be aware too though that even with a powerful spotting scope, it will not be easy to see the red laser dot in full daylight at distances beyond 25 yards. It's best to use the sight in lower light conditions.Factory ammo will also give considerable variation in points of impact. The amount of time and ammunition saved by using one of these sights makes them well worth using. The only two things about these sights that I could see as an improvement, would be some sort of switch rather than having to remove the batteries, and having a green laser instead of red. Given the infrequent need to use the sight however, makes the lack of switch and the need to remove the batteries an extremely small complaint. With current technologies in batteries and lasers having a green laser in such a small package is very unlikely and the cost would be considerably higher.

## Features

- <5mW 632-650nm Class IIIA Red Laser: Precision boresighting with a safe, visible reference point. Align sights accurately with this low-power output device, ensuring greater zeroing accuracy for enhanced performance.
- Precision Accuracy: This boresighting tool offers exceptional precision, ensuring that your sights or optics align precisely. It eliminates guesswork and enhances accuracy, making it an invaluable asset for zeroing.
- Durable Bore Sight: Built for repeated use, ensuring precise alignment and calibration. Withstands recoil and rough handling during zeroing. Maintains accuracy over time, essential for enthusiasts and professionals.
- Precision Zeroing, Less Waste: Swiftly aligns sights to bore, minimizing cartridge waste. Saves time and costs, an ideal solution for hunters.
- Easy to pack and travel: Its small and lightweight design make it a convenient and portable accessory for shooters who require efficient zeroing and improved accuracy in the field.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001BVI982 |
| Best Sellers Rank | #126,223 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #168 in Hunting Boresighters |
| Brand | Sightmark |
| Brand Name | Sightmark |
| Color | .223, 5.56x45 NATO |
| Compatible Devices | Handgun, Rifle |
| Customer Reviews | 4.2 out of 5 stars 3,714 Reviews |
| Global Trade Identification Number | 00810119010001 |
| Included Components | Carrying case, Battery pack |
| Item Dimensions L x W x H | 9"L x 6"W x 1"H |
| Item Display Dimensions | 9 x 6 x 1 inches |
| Item Display Weight | 1.6 ounces |
| Item Type Name | Boresight with Red Laser |
| Item Weight | 0.06 kg |
| Lens Color | Red |
| Magnification Maximum | 1 x |
| Manufacturer | Sellmark Corporation |
| Manufacturer Part Number | SM39001 |
| Material Type | Brass |
| Model Name | Centerfire |
| Model Number | SM39001 |
| Mounting Type | Integral Mount |
| Number of Items | 1 |
| Objective Lens Diameter | 45 millimeters |
| Product Dimensions | 9"L x 6"W x 1"H |
| Product Style | .223, 5.56x45 NATO |
| Reticle Type | Single Dot |
| Sport | Hunting |
| Sport Type | Hunting |
| Style | .223, 5.56x45 NATO |
| UPC | 604945320713 810119010001 024145113371 |
| Unit Count | 1 Ounce |
| Warranty Description | Limited Lifetime Warranty |

## Product Details

- **Brand:** Sightmark
- **Color:** .223, 5.56x45 NATO
- **Compatible Devices:** Handgun, Rifle
- **Item Weight:** 0.06 kg
- **Magnification Maximum:** 1 x
- **Material:** Brass
- **Objective Lens Diameter:** 45 millimeters
- **Product Dimensions:** 9"L x 6"W x 1"H
- **Sport:** Hunting
- **Style:** .223, 5.56x45 NATO

## Images

![223, 5.56x45 NATO Boresight with Red Laser - Image 1](https://m.media-amazon.com/images/I/61XwP3WXOLL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great. Get the silver oxide SG5 batteries
*by D***D on September 25, 2011*

I have four of the Sightmark laser boresights - the 12 gauge, 9mm, 7.62x39mm, and .223. I had used a Bushnell laser boresight before getting this set of chamber loaded laser boresights. The Bushnell is the kind that you stick into the muzzle end of the gun, fitted with an arbor matched to the barrel size. The problem with this device was that the arbors never fit quite right - they were always either too tight or too loose, plus you had to try to seat the body of the boresight in the center of the opening of the barrel (or muzzle brake) in order to properly align the center axis of the boresight with the center axis of the barrel. This rarely if ever happened just right as the slightest tilt in the seating of this boresight in the barrel would take it off the center axis so that rotating the laser would cause the laser light to mark out a small circle that was several MOA in diameter rather than being dead centered. Ugh. Of course with these chamber loaded laser boresights, there is also the potential for the lasers to be mis-aligned off the center axis. Plus there is the potential for the boresight to not fit the chamber properly. The key is to find a brand that has a measure of quality control so that you aren't stuck with these problems. I read through a lot of reviews before deciding on Sightmark. It is definitely not the cheapest out there. There are so many different brands and generic versions of these chamber loaded laser boresights now that almost look alike, with many much cheaper than the Sightmark. However, it was clear from reading the reviews that as the prices went down, so did the quality control. Several of these cheaper brands came with complaints that the lasers were not aligned to the center axis (resulting in the laser painting a circle as it rotates in the chamber) or that they did not fit properly in the chambers and so would either get stuck or wiggle. I have this theory that the really cheap laser boresights must be factory seconds or some such. I considered the Osprey line with the adjustable arbors, which saves money by allowing you to use one laser bore sight for different calibers. But, the reviews indicated that hassling with arbors would have an effect on accuracy and reliability. I almost got the Firefield, which seemed to have a similar number of decent reviews. Ultimately I decided against it because the entire line is made of an aluminum shell, and I think the brass shell of the Sightmark will hold up better. It should be noted, however, that the 12 gauge Sitemark is made out of aluminum, unlike the others, and is only painted a brass color. The biggest complaint against all of these laser boresighters are the frequent DOA batteries and poor battery life. The Sightmarks all come with alkaline button cell batteries. The small caliber ones (9mm, 7.62mm, .223) come with two AG5 batteries while the 12 gauge came with three AG13 (LR44) batteries. To get you all confused, the printed information on the back of the packaging for the 7.62mm and .223 says you can use 3 AG3 batteries in place of the 2 AG5 batteries (since the AG3 is a thinner battery with the same 7.9mm diameter), while the printed info for the 12 gauge says you can use 2 AG5 or 3 AG13 batteries. This is flat out incorrect since 2 AG5 batteries are too small to fit into the 12 gauge Sightmark battery chamber. Confused? Go to wikipedia and look up the article "List of battery sizes". Scroll down to the section titled "Silver oxide and alkaline cells". The table lists all the different names for each battery, their dimensions, and their mAh power rating. Note how the silver oxide batteries contain 1-1/2 to two times as much energy as the alkaline batteries. So the key is to go out and get some silver oxide button batteries, size SG5 for the AG5 powered Sightmarks and SG13 for the AG13 powered lasers. And don't go to your nearest retail store, since that will cost you an arm and a leg. Google shop for these batteries online. I found two Made in China "brands" one called Vinnic and another by Chung Pak Battery Works which were pretty cheap. The names aren't important, since I'm sure they will change rapidly. Just remember to get some silver oxide batteries online at the same time you are getting these Sightmark bore sights. How well did these Sightmarks work? The very first time I used one (the 7.62x39mm), I plugged in the included AG5 alkaline batteries and the resulting laser light was exceedingly weak. My initial reaction was that this was a bad laser. Then I remembered the silver oxide batteries I had gotten. When I switched out the batteries, the laser suddenly glowed brightly. Later, when this set of silver batteries finally wore down, the laser light faded again. That's a sign to change batteries. The larger AG13 alkaline batteries for the 12gauge shotgun boresight worked reasonably well and are still working as of this writing. Not surprising, since these batteries pack a lot more energy than the small AG5 batteries. As many have noted, the Sightmarks do not have an on-off switch. Once the batteries are screwed in the laser light is on! This is just as well, since the bore sights have to flush fit inside the chamber of the barrel and endure having the bolt and firing pin slammed into them. But you do have to have a plan of action ready so as to not run down your batteries. With one pair of SG5 silver oxide batteries, I was able to adjust the sights for about four guns, each taking about 5-10 minutes. So I am guesstimating a battery life of about 30 minutes with a fresh pair of SG5 silver batteries (the Sightmark packaging claims up to an hour of battery life - hah!). All of the Sightmarks have fit in well, none have gotten stuck (so far), and none have had off-center lasers. These chamber loaded Sightmark boresighters make it easy to dial in a scope, and for fixed sights, they help confirm the aim points. They are much better than the muzzle loaded bore sights, although the total cost is a lot more since they are ammo caliber specific.

### ⭐⭐⭐⭐⭐ I've found these in the chamber type of laser bore sights to work much better than the universal types which hang out from the .
*by K***S on September 6, 2015*

I own several different laser bore sights by Sightmark, in a number of different calibers. I also have one of their universal laser bore sights. I've found all of their products to work quite well so far. I've found these in the chamber type of laser bore sights to work much better than the universal types which hang out from the muzzle. The machining on these in the chamber types by Sightmark is quite good. With the firearm firmly mounted in a heavy bench rest, I've rotated the sight to several positions in the chamber and seen very little change in the point of the dot even at 100 yards, which indcated to me not only a very good machining but also a very good adjustment of the laser within the brass body. One thing to bear in mind with these sights are that while they do feature a rim like a standard cartridge, the sight is not meant to be removed from the chamber by means of the extractor and bolt. While you will get best results by gently letting the bolt close and push the sight snugly into the chamber, the sight will not simply fall out upon opening the bolt and again, it is not meant to be extracted like a standard cartridge. to remove it is best to open the bolt and keep it open while using a cleaning rod from the muzzle end to gently push the sight out from the chamber. Another thing to bear in mind is that none of these types of sights are perfect. They will do a little better than just getting you on paper, but you will still have to go through the usual steps of zeroing your sights or scope. Consider the distance that you are looking to have as the zero. Even though it is a laser, the diameter of the dot will increase over distance as will any very slight variation from true bore line center. Getting on paper and close to target center at 100 yards with such a device is still doing quite well. At 25 to 50 yards though these devices are outstanding. Be aware too though that even with a powerful spotting scope, it will not be easy to see the red laser dot in full daylight at distances beyond 25 yards. It's best to use the sight in lower light conditions.Factory ammo will also give considerable variation in points of impact. The amount of time and ammunition saved by using one of these sights makes them well worth using. The only two things about these sights that I could see as an improvement, would be some sort of switch rather than having to remove the batteries, and having a green laser instead of red. Given the infrequent need to use the sight however, makes the lack of switch and the need to remove the batteries an extremely small complaint. With current technologies in batteries and lasers having a green laser in such a small package is very unlikely and the cost would be considerably higher.

### ⭐⭐⭐⭐ Saves you $$$ firing rounds trying to zero in
*by W***S on September 25, 2019*

I picked one up for my AR-15 and it worked flawlessly. I inserted the batteries, slid it into the chamber and was presented with a nice red laser dot. It certainly did make it easier to zero the weapon. Very cost effective as I can use it again should I change my red dot or decide to use a scope instead. Of course, you can loan it to your less intelligent buddy who didn't think to get one and it obviously can be used on any 5.56 gun. Sure, 5.56 rounds are currently going a little over 30 cents a round, but that adds up if you have trouble zeroing in. (I watched my son fire off 50 rounds with his AR-15 without using a bore sight and he wasn't even close to getting zeroed. It turned out to be an issue with his scope, but with a bore sight he would have figured that out a lot sooner. I had no issues with my bore sight. It aligned perfectly. Apparently, some people get lemons that weren't properly calibrated at the factory. I strongly suggest returning it for a replacement. It's not going to cost you anything since you bought it on Amazon. Odds are that you're replacement bore sight will work perfectly. I don't care for the fact that in order to turn the laser on you must open the bore sight, insert the batteries then tighten the cap. To turn it off you must remove the batteries. No on/off switch. For the money I guess that's expected, but wouldn't it be nice to slip the bore sight into your chamber and have it come on automatically when you close your bolt? This is just a minor irritant as I don't have to use the bore sight every time I go to the range. Other than no on/off switch I'm perfectly happy with this purchase which is why I got one for my AK-47 too.

## Frequently Bought Together

- Sightmark Centerfire Boresight with Red Laser
- Sightmark RimFire Brass Boresight with Red Laser

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-10-22*