Laser sight

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Singaporean soldier aiming a SAR 21 with laser sight SAR 21 Rifle.jpg
Singaporean soldier aiming a SAR 21 with laser sight

A laser sight is a device attached or integral to a firearm to aid target acquisition. Unlike optical and iron sights where the user looks through the device to aim at the target, laser sights project a beam onto the target, providing a visual reference point.

Contents

Although lasers in the visible part of the spectrum are most common, invisible infrared (IR) lasers may be used in conjunction with a night vision device. [1] [2] As they are offset from the barrel, laser sights need to be zeroed in, much like a conventional sight, so that the beam intercepts the point of impact at a chosen distance. [3] Devices may include one or both types of laser, with some models also incorporating a rangefinder, flashlight, or IR illuminator. [4] Laser sights may be attached to the existing sighting mechanism, the trigger guard, via a rail system, or can be integrated into replacement components such as the guide rod or grip plates. [5] [6] [7] Some variants are also incorporated into other attachments such as foregrips. [8]

Laser sights are primarily used by military and law enforcement, although have some civilian use for hunting and self defense. They are also found on some less-lethal weapons, such as Taser electroshock weapons. [9]

History

The laser sight was first brought to market by Laser Products Corporation (today known as SureFire) in 1979. [10] The design was patented in 1978 by Surefire founder Dr. John Matthews, a pioneer in the field of Photonics, and his business partner Ed Reynolds. The ruggedized helium-neon gas laser was custom built into the extended Pachmayr grip of a .357 Magnum Colt Trooper and fed by a rechargeable 12-volt battery. [11] The popularity of this new product among SWAT and special forces led Laser Products Corp. to design and produce similar laser sights for other firearms employed by military and law enforcement such as the Colt M16, Remington 870, H&K MP5, and Ruger Mini-14. [12]

Laser sights were popularized outside of military and law enforcement when Laser Products fitted The Terminator's iconic weapon, a .45 Longslide pistol, with a custom He-Ne laser. [10] Today, most modern laser sights are solid-state lasers, as opposed to the original gas design. [11] Modern weapon-mounted lasers and combat lights produced by SureFire continue to be widely used by the U.S. Military, its allies, and law enforcement. [12]

Purpose

Benefits

Accuracy

A USAF Airman using an M4 carbine with an AN/PEQ-15 laser sight Aiming a PEQ-15 laser device on target 150411-F-GK926-095.jpg
A USAF Airman using an M4 carbine with an AN/PEQ-15 laser sight
U.S. Army 82nd Airborne Division using IR laser sights seen through a night vision device on a training exercise in Iraq Defense.gov photo essay 091026-A-3108M-004.jpg
U.S. Army 82nd Airborne Division using IR laser sights seen through a night vision device on a training exercise in Iraq

The use of laser sights is associated with increased accuracy in general, increasing the probability of hitting the target especially in low light conditions. [13] [14] The projected dot speeds up target acquisition, decreasing the time required for the shooter to aim and fire, as well as decreasing the time necessary for follow-up shots. Laser sights also aid in point shooting, where the shooter relies on hand eye coordination rather than aiming with a traditional sight, [15] this most often occurs and is taught when conducting CQM (close quarters marksmanship) or urban operations where engagement distances are less than 15 m (49 ft), and the shooter is operating in confined spaces. [16] This is of particular use when the user does not have time or is unable to obtain a proper sight picture before firing; for example, the use of ballistic shields or gas masks may obstruct access to the sights. Lasers also increase accuracy when shooting from an unconventional stance. [17]

Training

Laser sights are also a useful training aid. They allow users to practice dry-fire drills while being able to see the point of impact: this has significant safety benefits. Training with laser sights has been shown to improve shooting skills faster, although both instructors and manufacturers recommended that users continue training without lasers to avoid becoming dependent on them. [18] [7]

Deescalation

By providing a visual indication of where the gun is aimed, laser sights add an extra factor of intimidation. Studies of law enforcement indicate that suspects faced with laser sights are significantly more likely to surrender, even if they themselves are armed. [19] [14]

Use with Night Vision Devices

IR (infrared) lasers can be used with night vision devices, as the bulk of a head-mounted night vision device makes aiming with iron sights or a conventional optic difficult. [1] These lasers cannot be seen by the naked eye and are only visible when utilizing night vision devices. Some IR laser units, like the AN/PEQ-2, utilize two separate lasers: a narrow "aiming" laser and a more diffuse "illuminator". The aiming laser is used to estimate point of impact, while the illuminator is used to better visualize targets and the environment through the night vision device. [20] However, even with laser sights, shot groupings are still inferior to those achieved in daytime, and the degree of improvement is highly dependent on correct set up of the system. [2]

Drawbacks

Long range accuracy

Where a laser beam travels in a straight line, the path of a bullet gradually deviates after it leaves the barrel due to external forces such as gravity, wind, and even the rotation of the earth. This is a significant issue for long distance shooting; shorter range weapons such as handguns are less affected. Another related issue is that the beam widens over distance, meaning that instead of projecting a small dot, a much larger circle may be produced. [21]

Visibility in bright light

Visibility of laser sights deteriorates in bright light. Green lasers are more effective in bright conditions, however they are more complex to produce so are often larger and more expensive than red lasers. [22]

Aerial targets

Laser sights cannot be used for hunting flying game in the daylight, as neither the beam nor dot are visible. [21] A further risk to aircraft is also an issue, as even civilian grade lasers are capable of hitting a plane from 2 miles away. [7]

Israel Defence Forces using laser sights in training Flickr - Israel Defense Forces - Nachal Brigade Reconnaissance Battalion in "Commando" Training (2).jpg
Israel Defence Forces using laser sights in training

Batteries

Laser sights rely on batteries to work. As such, they require regular maintenance and may fail during use. Non-water resistant models also risk electrical damage through water ingress. [23]

Added mass

As with all firearms attachments, laser sights add mass to the firearm. This is particularly significant for handguns, as many holsters aren't designed to accommodate them. [7]

Risk of eye damage

Lasers can easily cause damage to the eyes. Visible lasers are unlikely to cause permanent damage due to the blink reflex, however IR lasers do not trigger this and thus pose a significant risk. [17]

Revealing position

The use of laser sights poses a risk in tactical scenarios as they may reveal the user's location, although this can be mitigated by only turning on the laser when needed. [17] An additional consideration for military and law enforcement is whether the enemy has night vision capabilities; if so, IR lasers will be visible to them. [1]

Difficulty zeroing

Laser sights are somewhat more difficult to zero than conventional sighting systems. IR lasers in particular can take in excess of an hour to properly zero, depending on the methods used. [2]

Boresights

Laser boresights differ from laser sights in that they are not intended, or capable, of being used at the same time as the firearm; instead, they are intended to aid in zeroing the firearm. A boresight is a laser in the shape of a cartridge. The user chambers a boresight of the appropriate calibre which projects a laser beam directly down the barrel, providing a visual indicator of the point of impact at a given range. The user then adjusts the sights until they align with the dot. Boresighting suffers from the same weakness as laser sights in that while the beam is straight, the path of the bullet curves; as such it is not a substitute for traditional zeroing, rather they serve to speed up the process. [24]

Glock 23 with Insight M6 dual flashlight and laser sight Glock Model 23 with tactical light and laser sight..jpg
Glock 23 with Insight M6 dual flashlight and laser sight

Law

Restrictions on laser sights vary by jurisdiction. Another consideration is the legality of the laser itself: the power output of military and law enforcement issue devices often exceeds that permitted for civilian use. [1]

U.S.

In the U.S. laser sights are mostly legal for self-defense purposes, however their use for hunting is more strictly regulated. [21]

UK

UK firearms legislation does not mention accessories such as laser sights. [25] There are no restrictions on using laser sights on rifles at a range. [26]

Users

U.S. police

In a 2019 survey of US police officers, less than 13% used laser sights on duty, with only 32% saying that their agency permitted their use. [27]

See also

Related Research Articles

<span class="mw-page-title-main">Night-vision device</span> Device that allows visualization of images in levels of light approaching total darkness

A night-vision device (NVD), also known as a night optical/observation device (NOD) or night-vision goggle (NVG), is an optoelectronic device that allows visualization of images in low levels of light, improving the user's night vision.

<span class="mw-page-title-main">SAR 21</span> Bullpup assault rifle

The SAR 21 is a bullpup assault rifle designed and manufactured in Singapore, chambered for the 5.56x45mm cartridge. First revealed and subsequently adopted by the Singapore Armed Forces (SAF) as its standard service weapon in 1999, it was designed and developed over a four-year period to replace the locally license-built M16S1 by the Ministry of Defence (MINDEF), Singapore Army and the former Chartered Industries of Singapore (CIS), presently ST Engineering Land Systems.

<span class="mw-page-title-main">Tactical light</span> Flashlight used in conjunction with a firearm

A tactical light or weapon light is a flashlight used in conjunction with a firearm to aid low-light target identification, allowing the user to simultaneously aim a weapon and illuminate the target. Tactical lights can be handheld or mounted to the weapon with the light beam parallel to the bore. Tactical lights can also serve as a non-lethal weapon, used to temporarily blind and disorient targets or, in the case of a large handheld flashlight, to be used as a blunt weapon.

<span class="mw-page-title-main">Laser pointer</span> Handheld device that emits a laser beam

A laser pointer or laser pen is a handheld device that uses a laser diode to emit a narrow low-power visible laser beam to highlight something of interest with a small bright colored spot.

<span class="mw-page-title-main">Handgun holster</span> Device for the secure placement of a handgun on ones person

A handgun holster is a device used to hold or restrict the undesired movement of a handgun, most commonly in a location where it can be easily withdrawn for immediate use. Holsters are often attached to a belt or waistband, but they may be attached to other locations of the body. Holsters vary in the degree to which they secure or protect the firearm. Some holsters for law enforcement officers have a strap over the top of the holster to make the handgun less likely to fall out of the holster or harder for another person to grab the gun. Some holsters have a flap over the top to protect the gun from the elements.

<span class="mw-page-title-main">Sight (device)</span> Visual aiming device

A sight or sighting device is any device used to assist in precise visual alignment of weapons, surveying instruments, aircraft equipment, optical illumination equipment or larger optical instruments with the intended target. Sights can be a simple set or system of physical markers that serve as visual references for directly aligning the user's line of sight with the target, or optical instruments that provide an optically enhanced—often magnified—target image aligned in the same focus with an aiming point. There are also sights that actively project an illuminated point of aim onto the target itself so it can be observed by anyone with a direct view, such as laser sights and infrared illuminators on some night vision devices, as well as augmented or even virtual reality-enabled digital cameras with software algorithms that produce digitally enhanced target images.

<span class="mw-page-title-main">Boresight (firearm)</span>

Boresighting is a method of visually pre-aligning a firearm barrel's bore axis with the target, in order to more easily zero the gunsight. The process is usually performed on a rifle, and can be accomplished either with the naked eye, or with a specialized device called a boresighter.

<span class="mw-page-title-main">AN/PEQ-2</span> US military laser sight

The AN/PEQ-2 Infrared Target Pointer/Illuminator/Aiming Light (ITPIAL) is a laser sight for use on rifles fitted with a Picatinny rail. It was manufactured by Insight Technology.

<span class="mw-page-title-main">AN/PEQ-6</span>

The AN/PEQ-6 Integrated Laser Light Module (ILLM) is a laser aiming module (LAM) designed and manufactured by Insight Technology for use by United States Special Operations Command (USSOCOM) with the Heckler & Koch Mark 23 semi-automatic pistol and a Knight's Armament Company suppressor; the whole system is designated the Mk 23 Mod 0 Offensive Handgun Weapon System.

<span class="mw-page-title-main">EOTech</span> American electro-optic company

EOTECH is an American company that designs, manufactures, and markets electro-optic and night vision products and systems. The company is headquartered in Plymouth, Michigan.

The AN/PEQ-5, also known as the 'Carbine Visible Laser (CVL)', is a laser sight manufactured by Insight Technology.

<span class="mw-page-title-main">Sniper equipment</span> Rifle body, optical parts, and accessories

The major components of sniper equipment are the precision sniper rifle, various optical scopes and field glasses, specialized ammunition and camouflage materials for the sniper’s body and equipment. A sniper’s spotter typically also wears camouflage. In the 2010s, a spotter uses various optical gear and in some cases a laser rangefinder. Snipers may also use monopods, bipods or tripods to steady their aim.

The following are terms related to firearms and ammunition topics.

<span class="mw-page-title-main">LLM01</span> Light or laser sight module

The LLM01 is an adaptive target acquisition module made by Rheinmetall Soldier Electronics GmbH in Stockach, Germany. It is designed to be mounted with a metal integral quick release clamping adapter on the left side of the carry handle adapter of Heckler & Koch G36 assault rifles. It can also be attached to other firearms, such as the Heckler & Koch MP7 submachine gun and L85A2 assault rifle.

<span class="mw-page-title-main">Reflector sight</span> Optical device for aiming

A reflector sight or reflex sight is an optical sight that allows the user to look through a partially reflecting glass element and see an illuminated projection of an aiming point or some other image superimposed on the field of view. These sights work on the simple optical principle that anything at the focus of a lens or curved mirror will appear to be sitting in front of the viewer at infinity. Reflector sights employ some form of "reflector" to allow the viewer to see the infinity image and the field of view at the same time, either by bouncing the image created by lens off a slanted glass plate, or by using a mostly clear curved glass reflector that images the reticle while the viewer looks through the reflector. Since the reticle is at infinity, it stays in alignment with the device to which the sight is attached regardless of the viewer's eye position, removing most of the parallax and other sighting errors found in simple sighting devices.

<span class="mw-page-title-main">Holographic weapon sight</span> Type of gunsight

A holographic weapon sight or holographic diffraction sight is a non-magnifying gunsight that allows the user to look through a glass optical window and see a holographic reticle image superimposed at a distance on the field of view. The hologram of the reticle is built into the window and is illuminated by a laser diode.

<span class="mw-page-title-main">Sighting in</span>

In ranged weapons such as firearms and artillery pieces, the act of sighting in or sight-in is a preparatory or corrective calibration of the sights with the goal of having the projectile placed on a predictable impact position in relation to the sight picture. The principle of sighting-in is to shift the line of aim until it intersects the parabolic projectile trajectory at a designated point of reference, so when the gun is fired in the future it will repeatably hit where it aims at identical distances of that designated point.

<span class="mw-page-title-main">AN/PEQ-16</span> Military infrared laser aiming module

The Mini Integrated Pointing Illumination Module (MIPIM) or AN/PEQ-16 manufactured by Insight/L3Harris is the successor to the AN/PEQ-15 which is the most widely used IR Laser Aiming Module (LAM) in the world.

<span class="mw-page-title-main">AN/PEQ-15</span> Multifunction weapon mounted IR laser aiming module

The Advanced Target Pointer Illuminator Aiming Laser, ATPIALAN/PEQ-15 known colloquially as the "PEQ-15" [] produced by L3Harris ; is a multifunction IR Target Pointer & Illuminator, a.k.a. a Laser Aiming Module (LAM) for use as a rifle attachment, using a Picatinny rail mounting system.

References

  1. 1 2 3 4 Utley, Sean (11 June 2020). "Selecting An IR Laser And Illuminator". Firearms News. Retrieved 21 January 2021.
  2. 1 2 3 Dyer, Smith, & McClure (June 1995). "Shooting with Night Vision Goggles and Aiming Lights" (PDF). U.S. Army Research Institute for the Behavioural and Social Sciences (Report 1678). Archived (PDF) from the original on 29 January 2021.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  3. ↑ "3 Methods for Zeroing Your Handgun Laser". www.shootingillustrated.com. Retrieved 21 January 2021.
  4. ↑ "StackPath". www.militaryaerospace.com. Retrieved 21 January 2021.
  5. ↑ "What You Need To Know About Laser Sights". www.nrablog.com. Retrieved 21 January 2021.
  6. ↑ McHale, Tom. "A Handgun Laser Primer". blog.beretta.com. Retrieved 21 January 2021.
  7. 1 2 3 4 Findley, Ben (1 July 2013). "Laser Sights on Firearms: Are they For You?". USA Carry. Retrieved 21 January 2021.
  8. ↑ Fortier, David M. (23 September 2010). "CGL Foregrip Laser".
  9. ↑ "TASER X2". www.axon.com. Retrieved 21 January 2021.
  10. 1 2 "Just How Large Was The First Laser Sight?". www.nrablog.com. Retrieved 6 February 2023.
  11. 1 2 "True story: the making of the Terminator's laser-sighted .45 pistol". arstechnica.com. 10 March 2010. Retrieved 6 February 2023.
  12. 1 2 "Zeroed In: John Matthews". www.recoilweb.com. 28 October 2018. Retrieved 6 February 2023.
  13. ↑ McHale, Tom. "Benefits of Using a Handgun Laser". blog.beretta.com. Retrieved 21 January 2021.
  14. 1 2 Houde-Walter, Will (1997). "Violence reduction and assailant control with integral laser-sighted police pistols". In Alexander, John B.; Spencer, Debra D.; Schmit, Steve; Steele, Basil J. (eds.). Security Systems and Nonlethal Technologies for Law Enforcement. Vol. 2934. pp. 15–19. doi:10.1117/12.265415. S2CID   110664266.
  15. ↑ Marshall, Brian (30 June 2019). "The Case for Laser Sighting". www.policemag.com. Retrieved 21 January 2021.
  16. ↑ Miller, Stephen W. (11 March 2022). "Winning the CBQ". Armada International. Retrieved 5 December 2023.
  17. 1 2 3 Nielsen, Eugene S. (31 August 1999). "Laser Sights Give You That Tactical Edge". www.policemag.com. Retrieved 21 January 2021.
  18. ↑ "NCJRS Abstract - National Criminal Justice Reference Service". www.ncjrs.gov. Retrieved 21 January 2021.
  19. ↑ "NCJRS Abstract - National Criminal Justice Reference Service". www.ncjrs.gov. Retrieved 21 January 2021.
  20. ↑ Dyer, Jean L. (November 1999). "Training Lessons Learned on Sights and Devices in the Land Warrior (LW) Weapon Subsystem" (PDF). U.S. Army Research Institute for the Behavioral and Social Sciences (Research Report 1749): 2. Archived (PDF) from the original on 10 July 2020. Retrieved 29 March 2022.
  21. 1 2 3 Jardim, Frank (13 February 2019). "How Laser Sights for Hunting Can Improve Your Odds in the Field".
  22. ↑ "Laser Sights: Red vs. Green". www.nrafamily.org. Retrieved 21 January 2021.
  23. ↑ "The Basics of Laser Sights". www.americanrifleman.org. Retrieved 21 January 2021.
  24. ↑ "How Does a Bore Sight Work?". SportsRec. Retrieved 21 January 2021.
  25. ↑ Guide on firearms licensing law (PDF). U.K. Home Office. 2016.
  26. ↑ "Case 236 - Ban on laser sights in rifle range". www.hse.gov.uk. Retrieved 21 January 2021.
  27. ↑ Griffith, David (7 July 2019). "Exclusive POLICE Survey: Weapon Lights, Optics, and Lasers". www.policemag.com. Retrieved 21 January 2021.
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