View source for M110 Semi-Automatic Sniper System

{{Use list-defined references|date=July 2022}}

{{Infobox weapon
| name               = M110 Semi-Automatic Sniper System
| image              = PEO M110 SASS Profile.jpg
| image_size         = 300
| caption            = The M110 Semi-Automatic Sniper System
| origin             = United States
| type               = [[Sniper rifle]]
<!-- Type selection -->| is_ranged          = yes
<!-- Service history -->| service            = 2008–present
| wars               = [[War in Afghanistan (2001–2021)]]<br />[[Iraq War]]<br />[[Kurdish–Turkish conflict (2015–present)]]<br />[[Militias-Comando Vermelho conflict]]<br />[[Syrian Civil War]]<br />[[War in Iraq (2013–2017)]]<br/>[[Russo-Ukrainian war]]
<!-- Production history -->| designer           = 
| design_date        = 2007<ref name="KAC store"/>
| manufacturer       = [[Knight's Armament Company]]
| production_date    = 
| number             = 
| variants           = *M110 SASS
*M110A2
*M110A3
<!-- General specifications -->| weight             = *{{convert|6.27|kg|lb|abbr=on}} unloaded M110 
*{{convert|4.76|kg|lb|abbr=on}} unloaded M110A2
| length             = *{{convert|1029|-|1181|mm|in|2|abbr=on}} M110: buttstock fully retracted without and with suppressor
*{{convert|1009.65|-|1104.9|mm|in|2|abbr=on}} M110A2: buttstock fully retracted to fully extended (presumably without suppressor)<ref name="m110a2 best ranger"/>
| part_length        = {{convert|508|mm|in|abbr=on}} barrel
| crew               = <!-- Ranged weapon specifications -->
| cartridge          = 
* [[7.62×51mm NATO]]
* [[6.5mm Creedmoor]]
| action             = [[Gas-operated]], [[Closed bolt|closed]] [[rotating bolt]], [[Direct impingement#Stoner bolt and carrier piston system|Stoner bolt and carrier piston]]
| rate               = [[Semi-automatic rifle|Semi-automatic]]
| velocity           = {{convert|783|m/s|ft/s|abbr=on}} with 175 gr. M118LR
| range              = {{convert|800|m|yd|0}} (point targets)
| max_range          = 
| feed               = 10 or 20-round detachable [[SR-25 pattern magazine|SR-25 pattern]] box magazine
| sights             = 
}}
[[File:M-110-SASS-0006.jpg|thumb|300px|[[USMC]] [[sniper]] fires the M110 SASS in a range.]]

The '''M110 Semi Automatic Sniper System''' ('''M110 SASS''') is an American [[Semi-automatic firearm|semi-automatic]] [[sniper rifle]] that is chambered for the [[7.62×51mm NATO]] round. It is manufactured by [[Knight's Armament Company]], developed from the [[Knight's Armament Company SR-25]], and adopted by the U.S. military following the 2005 US Army Semi-Automatic Sniper Rifle (XM110 SASR) competition. 

The M110 is to be replaced by the lighter and more compact [[M110A1 Rifle#Design|M110A1 CSASS]], which is developed from the G28, a variant of the [[Heckler & Koch HK417]]; however, most M110A1 models fielded have been of the SDMR variant. In 2021, a newer variant, the M110A2, was showcased and seen in use in early 2022.

==History==
[[File:PEO M110 SASS.jpg|thumb|300px|The M110 SASS with AN/PVS-10 Sniper Night Sight.]]
[[File:A U.S. Marine with the 26th Marine Expeditionary Unit (MEU) Maritime Raid Force fires an M110 semiautomatic sniper system during a nighttime live-fire exercise June 21, 2013 (cropped).jpg|thumb|A standard [[telescopic sight]] augmented with a night-vision device in front on the M110. Note that in addition to the image intensifier, the NVD gathers much more light by its much larger [[aperture]]]]

The M110 Semi-Automatic Sniper System is intended to replace the [[M24 Sniper Weapon System]] used by [[sniper]]s, [[Spotter (sniping)|spotters]], [[designated marksman|designated marksmen]], or squad advanced marksmen in the [[United States Army]]. However, the U.S. Army still acquired M24s from Remington until February 2010.<ref name="deflink 2008 contract"/>On September 28, 2005, the Knight's Armament Co. rifle won the competition and was selected to be the supplier of the M110 Semi-Automatic Sniper System. 

The XM110 underwent final operational testing in May and June of 2007 at Fort Drum, New York by a mix of Special Forces troops and Sniper trained soldiers from the 10th Mountain Division. In April 2008, U.S. Army soldiers from Task Force Fury in [[Afghanistan]] were the first in a combat zone to receive the M110. The troops rated the weapon very highly, noting the quality of the weapon and its semi-automatic capabilities compared to the bolt-action M24. The [[United States Marine Corps]] will also be adopting the M110 to replace some [[M39 Enhanced Marksman Rifle|M39]] and all [[SR-25|Mk 11]] as a complement to the [[M40 rifle|M40A5]].<ref name="usmc fielding"/> 

The rifle has [[Cross-dominance|ambidextrous]] features such as a double-sided magazine release, safety selector switch, and bolt catch.

==Design and features==
The rifle is similar to the [[SR-25]]/Mk 11 Mod 0, but differs significantly in [[Stock (firearms)|buttstock]] and rail system design. The SR-25, Mk 11 Mod 0, and M110 are based loosely on the original [[AR-10]] developed by [[Eugene Stoner]] but feature additional refinements instituted by KAC to maximize parts commonality with the [[AR-15]] design, improve weapon reliability, and increase accuracy.

The main differences between the Mk 11 and M110 are improvements suggested by a user group meeting between NAVSPECWAR, USASOC and USA in 2007:
* The rail system used: the KAC Free Floated RAS on the Mk 11 is replaced by a URX modular rail system with integral folding front 600-meter backup iron sight.
* The M110 buttstock: fixed, though the buttplate is adjustable for [[length of pull]] to match user preferences. Adjustment can be made without tools via a notched hand-tightened knob on the right-hand side of the stock. This feature was added during the change from XM110 to M110. The fixed buttstock also features integral quick-detachable sling swivel sockets located on each side of the stock near the rear of the lower receiver.
* The addition of a flash hider to the barrel of the M110, which also necessitates a modified QD Suppressor unit similar to that on the Mk 11.
* The M110's use of KAC's one-piece 30&nbsp;mm [[scope mount]] instead of two separate scope rings.

On June 12, 2008, the M110 was ranked #2 on the U.S. Army's top ten inventions of 2007.<ref name="def ind top invent 2007"/>
According to performance specification (MIL-PRF-32316 (AR) w/AMENDMENT 1, 5 October 2009):

<blockquote>3.4.1.1.1 Accuracy. The distance between the mean point of impact of each shot group, both unsuppressed and suppressed, shall be not greater than 1.1 inches at 300 feet. </blockquote>
<blockquote>3.4.1.1.2 Dispersion. The average mean radius (AMR) (see 6.11), of each shot group shall be not greater than to 0.68 inches at 300 feet. All targets shall be fired on using M118LR ammunition or equivalent, using five (5) round groups. </blockquote>

==Sporting use==
In 2009, the M110 rifle and commercial equivalents were added to the list of NRA-legal US service rifles under rule 3.1.6 of the NRA High Power Rifle Rules.<ref name="nra high power"/>

==Replacement or reconfiguration of M110==
In April 2011, according to [[Military.com]], the U.S. Army issued a request to the private sector to reconfigure or replace the current Knight Armament M110 sniper rifle, alleging that the current version of the M110 was not functioning well in the field and, according to industry officials and users in the field, required significant maintenance and replacement of parts.<ref name="kitup"/>  The U.S. Army responded directly, claiming that the rifle was functioning perfectly, citing a 100% approval rating from the [[173rd Airborne Brigade]], and they were simply looking for a smaller, lighter version of M110 for the spotter in a sniper team.<ref name="perf upgrade"/>

The specifications the U.S. Army has issued are as follows:<ref name="FBO specs"/>

# ''Operation:'' Semi-automatic
# ''Caliber:'' Compatible with 7.62×51mm NATO cartridges
# ''Accuracy:'' Capable of 1.3 [[minute of angle]] dispersion or better with match ammunition
# ''Size:'' Overall length shall be reduced using a shorter barrel and/or collapsible buttstock. Maximum length not to exceed {{convert|39|in|mm}} without suppressor. Desired minimum length is less than {{convert|36|in|mm}} with stock collapsed.
# ''Weight:'' Weight shall be under 9.0&nbsp;lb for unloaded rifle without optics and accessories
# ''Grip:'' A modular, adjustable pistol grip.
# ''Trigger:'' A non-adjustable match style trigger.
# ''Hand guard:'' A forend that includes a fixed 12 o’ clock rail with configurable 3, 6, and 9 o’ clock rails.
# ''Sound suppressor:'' A muzzle mounted, detachable sound suppressor.
# ''Muzzle device:'' A compensator/muzzle brake compatible with the sound suppressor.
# ''Bipod:'' Tool-less detachment featuring cant and pan/track capability.
# ''Day optic:'' An Army specified variable power day optic and compatible rings.
# ''Back up sights:'' Iron sights offset 45 deg from the DOS.
# ''Sling attachment:'' Flush cup, quick detach sling attachment points.
# ''Other:'' The upgraded M110 must meet the operational and environmental requirements that were fulfilled by the original M110 SASS.

===M110A1 replacement===
{{main|M110A1 Rifle}}
In July 2012, the U.S. Army requested sources to remanufacture the current M110 rifle into the Compact Semi-Automatic Sniper System (CSASS). The CSASS will be a shorter and lighter version of the M110 with a collapsible stock and removable flash suppressor, giving it an overall length of {{convert|36|in|mm}} and a weight of {{convert|9|lb|kg}} unloaded. The Army wants a capability to convert 125 rifles per month, with the ability to increase to 325 per month.<ref name="m110 csass feelers"/> The Army formally requested proposals for the CSASS in June 2014.<ref name="m110a1 rfp"/>

On 1 April 2016, the Army announced it had awarded [[Heckler and Koch]] a contract with a maximum value of $44.5 million as winner of the competition to replace the KAC M110. The weapon selected was not specified, but was likely the [[HK417#G28|H&K G28]]; H&K is to produce 3,643 rifles.<ref name="m110a1 pick hk"/> A goal of the effort was to give snipers a weapon that didn't "stick out" as a sniper rifle; with a suppressor, the M110 is {{convert|46.5|in|mm|abbr=on}}, {{convert|13|in|mm|abbr=on}} longer than the [[M4 carbine]] and {{convert|7|in|mm|abbr=on}} longer than the [[M16 rifle|M16A4 rifle]]. A minimum of 30 CSASS units will be used for production qualification testing and operational testing over 24 months.<ref name="kitup csass announce"/> 

H&K later confirmed that a modified G28 had indeed been selected as the CSASS rifle. The G28 is nearly 6&nbsp;cm (2.5&nbsp;in) shorter and 1.3&nbsp;kg (3&nbsp;lb) lighter than the M110 (unloaded and without a suppressor) and will cost about $12,000 per rifle.<ref name="armytimes8april16"/> The [[U.S. Marine Corps]] was slated to begin receiving the CSASS in May 2018 to replace their M110 rifles.<ref name="marine choose m110a1"/> However, as of 2022, all of the M110A1 units delivered were configured as squad designated marksman rifles (SDMR) rather than M110A1 CSASS rifles.<ref name="fielded SDMRs"/>

===M110A2===
[[File:Best Ranger Competition Image 11 of 11 7135368 220409-A-BN574-294.jpg|thumb|300px|An M110A2 seen at the 2022 [[Best Ranger Competition]]]]
The '''M110A2''' is an improved version of the original M110 rifle with [[M-LOK]] rails, an improved gas system, new suppressor, and adjustable stock.<ref name="m110a2 best ranger"/> This fills the gap of semi-automatic sniper rifles as most all of the M110A1 rifles issued were the SDMR variant and not designed for sniper work.<ref name="fielded SDMRs"/> The M110A2 was first seen at [[Association of the United States Army|AUSA 2021]] where it was displayed alongside a 14.5" SOCOM M110 rechambered for 6.5 Creedmoor.<ref name="SSD m110a2"/> The M110A2 was later seen at the 2022 [[Best Ranger Competition]] being used by a Ranger-qualified [[101st Airborne Division]] soldier.<ref name="m110a2 best ranger"/> 

The M110A2 is shorter than the original M110 and lighter as well at {{convert|10.5|lb|kg|abbr=on}}, which is comparable to the M110A1 SDMR's weight of {{convert|10.9|lb|kg|abbr=on}} with no attachments save an unloaded magazine. The decreased overall length does not come at the cost of barrel length as the M110A2 still has a {{convert|20|in|mm|abbr=on}} barrel.<ref name="m110a2 best ranger"/> KAC had a 5 year $13 million contract in 2020 to supply the Army with M110 rifles and this was amended in 2022 to include the M110A2 version of the rifle.<ref name="m110 2020 contract"/><ref name="revised m110a2 contract"/> 

The Navy and Marine Corps, which had previously been interested in the M110A1 CSASS, decided to instead pursue an M110 SASS PIP (Product Improvement Program) for FY2021 based on findings indicating improved range and lethality with the PIP compared to the M110A1 CSASS.<ref name="Nav/USMC 2021 budget m110 pip"/> Funding for subsequent fiscal years has been devoted to this PIP.<ref name="Navy/USMC 2023 budget m110 pip"/>

{{-}}

===M110A3 (6.5mm Creedmoor conversion)===
The '''M110A3''' is a [[6.5mm Creedmoor]] conversion for SOCOM M110 rifles.<ref name="m110a3 is 6.5 creedmoor"/> In October 2019, [[Naval Surface Warfare Center Crane Division|NSWC Crane]] ordered KAC's self-termed M110K1 conversion kits to upgrade [[United States Special Operations Command|USSOCOM]]'s M110s to fire 6.5mm Creedmoor, with {{Convert|14.5|in|adj=on}} and {{Convert|22|in|adj=on}} barreled configurations. 

These conversion kits included complete upper receiver assemblies chambered for 6.5 Creedmoor as well as new muzzle brakes, and B5 Systems collapsible precision buttstocks. New QD suppressors for 6.5 Creedmoor were to be ordered separately.<ref name="socom 6.5 convert"/><ref name="6.5 conversion nsn"/><ref name="6.5 conversion kit2 nsn"/>

==Users==
<!--READ FIRST: This section is for cited entries only. Please do not add entries into this list without a citation from a reliable source. All entries without a citation will be removed. Thank you.-->
* {{flag|Bahamas}}<ref name="M110 SASS"/>
* {{flag|Belize}}<ref name="M110 SASS"/>
* {{flag|Benin}}<ref name="M110 SASS"/>
* {{flag|Brazil}}: Used by Army Special Forces<ref>{{Cite web |date=2017-10-04 |title=Recent images of Rio's drug war - |url=https://www.thefirearmblog.com/blog/2017/10/04/recent-images-rios-drug-war/ |access-date=2022-10-27 |website=The Firearm Blog |language=en-US |archive-url=https://web.archive.org/web/20221027014943/https://www.thefirearmblog.com/blog/2017/10/04/recent-images-rios-drug-war/ |archive-date=27 October 2022}}</ref>
* {{flag|Bhutan}}<ref name="M110 SASS"/>
* {{flag|Cameroon}}<ref name="M110 SASS"/>
* {{flag|Chad}}<ref name="M110 SASS"/>
* {{flag|Czech Republic}}<ref name="M110 SASS"/>
* {{flag|Georgia}}: Used by [[Georgian Special Operations Forces|GSOF]].<ref>{{Cite web |url=https://mod.gov.ge/en/news/read/8894/on-the-23rd-jubilee-of-the-special-operations-forces-the-foundation-was-laid-for-the-construction-of-a-new-base |title=On the 23rd jubilee of the Special Operations Forces, the foundation was laid for the construction of a new base |website=mod.gov.ge |date=22 November 2022}}</ref>
* {{flag|Hungary}}<ref name="M110 SASS"/>
* {{flag|Iraq}}<ref name="M110 SASS"/>
* {{flag|Kenya}}<ref name="M110 SASS"/>
* {{flag|Latvia}}<ref name="M110 SASS"/>
* {{flag|Malaysia}}<ref>{{cite web|url=https://www.malaysiandefence.com/former-kd-jebat-co-is-lms-batch-2-project-leader/|title=Former KD Jebat CO is LMS Batch 2 Project Leader}}</ref>
* {{flag|Mexico}}<ref name="M110 SASS"/>
* {{flag|Moldova}}<ref>{{cite web|url=https://tvrmoldova.md/article/ffbfad4a25b1889d/sua-au-donat-armatei-nationale-a-r-moldova-un-nou-lot-de-echipamente-militare-in-valoare-de-trei-milioane-de-dolari-in-urma-unui-acord-intre-cele-doua-tari-semnat-in-anul-2019.html|title=SUA au donat Armatei Naţionale a R. Moldova un nou lot de echipamente militare, în valoare de trei milioane de dolari, în urma unui acord între cele două țări, semnat în anul 2019|author=Cristina Mirca|language=ro|publisher=[[TVR Moldova]]|date=4 August 2023}}</ref>
* {{flag|Peru}}<ref name="M110 SASS"/>
* {{flag|Poland}}: Used by [[Polish Special Forces]].<ref name="pol use"/>
* {{flag|Romania}}<ref name="M110 SASS">{{cite web|last1=Gerbe |first1=Jim |url=https://www.bidlink.net/news/2019/06/m110-semi-automatic-sniper-system-m110-sass-7-62mm-sniper-rifle/|title=M110 Semi Automatic Sniper System (M110 SASS), 7.62mm Sniper Rifle|website=BidLink.net|date=20 June 2019 |archive-url=https://web.archive.org/web/20221107170831/https://www.bidlink.net/news/2019/06/m110-semi-automatic-sniper-system-m110-sass-7-62mm-sniper-rifle/ |archive-date=7 November 2022}}</ref>
* {{flag|Senegal}}<ref name="M110 SASS"/>
* {{flag|Singapore}}<ref name="singapore interview"/>
* {{flag|Slovakia}}<ref name="M110 SASS"/>
* {{flag|Tunisia}}<ref name="M110 SASS"/>
* {{flag|Turkey}}<ref name="M110 SASS"/>
* {{flag|Ukraine}}: Reported to be used by special forces units under GUR, SBU, SSO and Ukrainian National Guard control.<ref name="ABM110">{{cite web | url=https://armourersbench.com/2023/03/19/m110-in-ukraine/ | title=M110 in Ukraine | date=19 March 2023 }}</ref> Foreign soldiers in the International Legion have used them in combat missions.<ref name="ABM110"/>
* {{flag|United States}}: Used by both [[US Army]] and Marine snipers.<ref name="armytimes8april16" />

==See also==
*[[Tabuk Sniper Rifle]]
*[[Chukavin sniper rifle]]
*[[Dragunov sniper rifle]]
*[[PSR-90]]
*[[SR-25]]
*[[Barrett M82]]

==References==
{{reflist|refs=
<ref name="KAC store">{{cite web|title=M110 |url=http://www.knightarmco.com/portfolio/m110/?cate_cm=military&term=m110&features=m110|website=[[Knight's Armament Company]] |archive-url=https://web.archive.org/web/20220330031309/https://www.knightarmco.com/12016/shop/military/m110/m110 |archive-date=30 March 2022 }}</ref>

<ref name="deflink 2008 contract">{{cite web |title=DefenseLink: Contracts for Wednesday, July 16, 2008 |url=http://www.defenselink.mil/contracts/contract.aspx?contractid=3820 |website=Defense Link |access-date=15 November 2014 |archive-url=https://web.archive.org/web/20140101120744/http://www.defense.gov/contracts/contract.aspx?contractid=3820 |archive-date=1 January 2014 |date=16 July 2008}}</ref>

<ref name="usmc fielding">{{cite web|url=http://www.marinecorpstimes.com/news/2011/03/marine-corps-sniper-rifle-m110-031711w/|title=Corps fielding new semi-automatic sniper rifle|last=Lamothe|first=Dan|date=March 17, 2011|work=[[Marine Corps Times]]|access-date=18 March 2011|url-status=dead |archive-url=https://web.archive.org/web/20110714034725/http://www.marinecorpstimes.com/news/2011/03/marine-corps-sniper-rifle-m110-031711w/|archive-date=14 July 2011}}</ref>


<ref name="def ind top invent 2007">{{cite web |title=US Army Awards Top 10 Inventions of 2007 |url=https://www.defenseindustrydaily.com/US-Army-Awards-Top-10-Inventions-of-2007-04997/ |website=Defense Industry Daily |access-date=15 November 2014 |archive-url=https://web.archive.org/web/20111103175509/https://www.defenseindustrydaily.com/US-Army-Awards-Top-10-Inventions-of-2007-04997/ |archive-date=3 November 2011 |date=27 July 2008}}</ref>

<ref name="nra high power">{{cite web|url=http://www.nrahq.org/compete/RuleBooks/HPR/hpr-w03.pdf|title=NRA High Power Rifle Rules: Section 3. Equipment and Ammunition|access-date=15 November 2014 |archive-url=https://web.archive.org/web/20100331213821/http://www.nrahq.org/compete/RuleBooks/HPR/hpr-w03.pdf |archive-date=31 March 2010}}</ref>

<ref name="kitup">{{cite web|url=http://kitup.military.com/2011/04/army-wants-lighter-shorter-m110-sniper-rifle.html?wh=wh|title=Army Wants Lighter, Shorter M110 Semi-Automatic Sniper System |website=Kit Up! |access-date=15 November 2014 |archive-url=https://web.archive.org/web/20200324183835/https://www.military.com/kitup/2011/04/army-wants-lighter-shorter-m110-sniper-rifle.html |archive-date=24 March 2020 |date=22 April 2011}}</ref>

<ref name="perf upgrade">{{Cite web|url=http://kitup.military.com/2011/04/army-speaks-to-m110-performanceupgrade.html|title=Army Speaks to M110 Performance/Upgrade |website=Kit Up! |archive-url=https://web.archive.org/web/20200324183830/https://www.military.com/kitup/2011/04/army-speaks-to-m110-performanceupgrade.html |archive-date=24 March 2020 |date=26 April 2011}}</ref>

<ref name="FBO specs">{{cite web|url=https://www.fbo.gov/index?s=opportunity&mode=form&id=224ffff679ab52b0333e79077372c757&tab=core&_cview=0|title=M110 Semi-Automatic Sniper System(SASS) Reconfiguration |website=[[System for Award Management|FedBizOps]] |access-date=15 November 2014 |archive-url=https://web.archive.org/web/20141129014515/https://www.fbo.gov/index?s=opportunity&mode=form&id=224ffff679ab52b0333e79077372c757&tab=core&_cview=0 |archive-date=29 November 2014 |date=31 March 2011}}</ref>

<ref name="m110 csass feelers">{{cite web|title=US Army looking to replace M14EBR; feelers out for compact M110 |url=https://www.militarytimes.com/off-duty/gearscout/2012/08/01/us-army-looking-to-replace-m14ebr-feelers-out-for-compact-m110/ |website=Gear Scout |archive-url=https://web.archive.org/web/20220525204039/https://www.militarytimes.com/off-duty/gearscout/2012/08/01/us-army-looking-to-replace-m14ebr-feelers-out-for-compact-m110/ |archive-date=25 May 2022 |date=31 July 2012}}</ref>

<ref name="m110a1 rfp">{{cite web |title=Army Wants to Buy Compact, Semi-Auto Sniper Rifles |url=http://kitup.military.com/2014/06/army-buy-compact-semi-auto-sniper.html |website=Kit Up! |archive-url=https://web.archive.org/web/20201216113543/https://www.military.com/kitup/2014/06/army-buy-compact-semi-auto-sniper.html |archive-date=16 December 2020 |date=13 June 2014}}</ref>


<ref name="m110a1 pick hk">{{cite web |last1=Jahner |first1=Kyle |title=Army picks Heckler & Koch sniper rifle to replace M110 |url=https://www.armytimes.com/news/your-army/2016/04/01/army-picks-heckler-koch-sniper-rifle-to-replace-m110/ |website=[[Army Times]] |archive-url=https://archive.today/20220525205456/https://www.armytimes.com/news/your-army/2016/04/01/army-picks-heckler-koch-sniper-rifle-to-replace-m110/ |archive-date=25 May 2022 |date=1 April 2016 |access-date=25 May 2022 |url-status=live }}</ref>

<ref name="kitup csass announce">{{cite web |title=Army Selects New Compact Sniper Rifle |url=http://kitup.military.com/2016/04/army-selects-new-compact-sniper-rifle.html |website=Kit Up! |archive-url=https://web.archive.org/web/20220319143138/https://www.military.com/kitup/2016/04/army-selects-new-compact-sniper-rifle.html |archive-date=19 March 2022 |date=1 April 2016}}</ref>

<ref name="armytimes8april16">{{cite web |last1=Jahner |first1=Kyle |title=H&K confirms: This is the Army's new and improved sniper rifle |url=http://www.armytimes.com/story/military/2016/04/08/hk-confirms-armys-new-and-improved-sniper-rifle/82788202/ |website=[[Army Times]] |archive-url=https://archive.today/20220525205821/https://www.armytimes.com/news/your-army/2016/04/08/h-k-confirms-this-is-the-army-s-new-and-improved-sniper-rifle/ |archive-date=25 May 2022 |date=8 April 2016 |access-date=8 April 2016 |url-status=live }}</ref>

<ref name="marine choose m110a1">{{cite web |title=The Marines just switched their main sniper rifle ― look what's next |url=https://www.militarytimes.com/news/your-marine-corps/2018/04/09/the-marines-just-switched-their-main-sniper-rifle-look-whats-next/ |website=[[Military Times]] |archive-url=https://web.archive.org/web/20210308145303/https://www.militarytimes.com/news/your-marine-corps/2018/04/09/the-marines-just-switched-their-main-sniper-rifle-look-whats-next/ |archive-date=8 March 2021 |date=9 April 2018}}</ref>

<ref name="fielded SDMRs">{{cite web |last1=Cox |first1=Matthew |title=Army Combat Units Now Getting New 7.62mm Squad Marksman Rifles |url=https://www.military.com/daily-news/2020/04/09/army-combat-units-now-getting-new-762mm-squad-marksman-rifles.html |website=[[Military.com]] |access-date=20 June 2022 |archive-url=https://web.archive.org/web/20210607105032/https://www.military.com/daily-news/2020/04/09/army-combat-units-now-getting-new-762mm-squad-marksman-rifles.html |archive-date=7 June 2021 |date=9 Apr 2020}}</ref>

<ref name="m110a2 best ranger">{{cite web |last1=Parsons |first1=Dan |title=New M110A2 Sniper Rifle Used In Army Ranger Competition |url=https://www.thedrive.com/the-war-zone/new-knights-armament-m110a2-rifle-used-in-army-ranger-competition |website=The War Zone |access-date=20 June 2022 |archive-url=https://web.archive.org/web/20220517090045/https://www.thedrive.com/the-war-zone/new-knights-armament-m110a2-rifle-used-in-army-ranger-competition |archive-date=17 May 2022 |date=19 April 2022}}</ref>

<ref name="SSD m110a2">{{cite web |title=AUSA 21 – Knight's Armament Co |url=https://soldiersystems.net/2021/10/12/ausa-21-knights-armament-co/ |website=Soldier Systems Daily |access-date=20 June 2022 |archive-url=https://web.archive.org/web/20211012212750/https://soldiersystems.net/2021/10/12/ausa-21-knights-armament-co/ |archive-date=12 October 2021 |date=12 October 2021}}</ref>


<ref name="m110 2020 contract">{{cite web |title=M110 Semi Automatic Sniper System (SASS) W15QKN-20-R-0015 / W15QKN-20-D-0044 |url=https://www.usaopps.com/government_bids/detail/NBD00159690456547430.htm |website=USA Opps |access-date=20 June 2022 |archive-url=https://web.archive.org/web/20220620194739/https://www.usaopps.com/government_bids/detail/NBD00159690456547430.htm |archive-date=20 June 2022 |date=1 October 2020}}</ref>


<ref name="revised m110a2 contract">{{cite web |title=M110 Semi Automatic Sniper System (SASS) W15QKN-20-R-0015 / W15QKN-20-D-0044 |url=https://www.usaopps.com/government_bids/detail/NBD00159927906405807.htm |website=USA Opps |access-date=20 June 2022 |archive-url=https://web.archive.org/web/20220620194913/https://www.usaopps.com/government_bids/detail/NBD00159927906405807.htm |archive-date=20 June 2022 |date=28 January 2022}}</ref>

<ref name="Nav/USMC 2021 budget m110 pip">{{cite web |title=Department of Defense Fiscal Year (FY) 2021 Budget Estimates February 2020 Navy Justification Book Volume 1 of 1 Procurement, Marine Corps |url=https://www.secnav.navy.mil/fmc/fmb/Documents/21pres/PMC_Book.pdf |website=Office of the [[United States Secretary of the Navy|US Secretary of the Navy]] |access-date=20 June 2022 |archive-url=https://web.archive.org/web/20210822223419/https://www.secnav.navy.mil/fmc/fmb/Documents/21pres/PMC_Book.pdf |archive-date=22 August 2021 |date=February 2020}}</ref>

<ref name="Navy/USMC 2023 budget m110 pip">{{cite web |title=Department of Defense Fiscal Year (FY) 2023 Budget Estimates April 2022 Navy Justification Book Volume 1 of 1 Procurement, Marine Corps |url=https://www.secnav.navy.mil/fmc/fmb/Documents/23pres/PMC_Book.pdf |website=Office of the [[United States Secretary of the Navy|US Secretary of the Navy]] |access-date=20 June 2022 |archive-url=https://web.archive.org/web/20220619042409/https://www.secnav.navy.mil/fmc/fmb/Documents/23pres/PMC_Book.pdf |archive-date=19 June 2022 |date=April 2022}}</ref>

<ref name="m110a3 is 6.5 creedmoor">{{cite web |title=US Army Issues NSN for B5 Systems Collapsible Precision Stock |url=https://soldiersystems.net/2022/06/10/us-army-issues-nsn-for-b5-systems-collapsible-precision-stock/ |website=Soldier Systems Daily |access-date=23 June 2022 |archive-url=https://web.archive.org/web/20220610151244/https://soldiersystems.net/2022/06/10/us-army-issues-nsn-for-b5-systems-collapsible-precision-stock/ |archive-date=10 June 2022 |date=10 June 2022}}</ref>

<ref name="socom 6.5 convert">{{Cite web |last1=Keller |first1=Jared |title=SOCOM is giving one of its sniper rifles a 6.5mm facelift |url=https://taskandpurpose.com/news/socom-sniper-rifle-6-5mm-creedmoor-conversion/ |website=[[Task & Purpose]] |access-date=11 May 2021 |archive-url=https://web.archive.org/web/20220307181240/https://taskandpurpose.com/news/socom-sniper-rifle-6-5mm-creedmoor-conversion/ |archive-date=7 March 2022 |date=30 October 2019}}</ref>

<ref name="6.5 conversion nsn">{{Cite web |title=NSN 1005-01-689-0749 MODIFICATION KIT,GUN,WEAPON |url=https://www.lqlite.com/Lq_FLIS.aspx?niin=01-689-0749&SE=401D72F9AA7077BEA |website=LogiQuest Lite |access-date=11 May 2021 |archive-url=https://web.archive.org/web/20220214004148/https://www.lqlite.com/Lq_FLIS.aspx?niin=01-689-0749&SE=401D72F9AA7077BEA |archive-date=14 February 2022}}</ref>


<ref name="6.5 conversion kit2 nsn">{{Cite web |title=NSN 1005-01-689-0760 MODIFICATION KIT,GUN,WEAPON |url=https://www.lqlite.com/Lq_FLIS.aspx?niin=01-689-0760&SE=401D72F9AA7077BEA |website=LogiQuest Lite |access-date=11 May 2021 |archive-url=https://web.archive.org/web/20210506154920/https://www.lqlite.com/Lq_FLIS.aspx?niin=01-689-0760&SE=401D72F9AA7077BEA |archive-date=6 May 2021}}</ref>

<ref name="pol use">{{cite web |last1=Krugler |first1=Andrzej |title=Broń pary snajperskiej to karabin wyborowy firmy Accuracy International AWM-F... - Andrzej Krugler Special-Ops.pl – Portal Ludzi Akcji |url=http://www.special-ops.pl/artykul-galeria/id215,prezydent-w-wojskach-specjalnych?gal=1&zdjecie=1816 |website=Special-Ops.pl – Portal Ludzi Akcji |access-date=5 December 2016 |archive-url=https://web.archive.org/web/20160323002439/http://www.special-ops.pl/artykul-galeria/id215,prezydent-w-wojskach-specjalnych?gal=1&zdjecie=1816 |archive-date=23 March 2016 |date=17 February 2012}}</ref>


<ref name="singapore interview">{{Cite web |last1= Mahmud |first1= Aqil Haziq |title = Exercise Forging Sabre: What it takes to be a Singaporean sniper |url=https://www.channelnewsasia.com/news/singapore/exercise-forging-sabre-what-it-takes-to-be-a-singaporean-sniper-9480018 |website=[[CNA (TV network)|Channel News Asia]] |archive-url=https://web.archive.org/web/20171212151027/https://www.channelnewsasia.com/news/singapore/exercise-forging-sabre-what-it-takes-to-be-a-singaporean-sniper-9480018 |archive-date=12 December 2017 |date=9 December 2017}}</ref>

}}

==External links==
{{Commons and category|M110 Semi-Automatic Sniper System|M110 Rifle}}
* [https://web.archive.org/web/20110722223112/https://peosoldier.army.mil/FactSheets/PMSW/SW_IW_M110.pdf M110 Semi-Automatic Sniper System (SASS) Fact sheet] [https://web.archive.org/web/20110719162809/https://peosoldier.army.mil/FactSheets/PMSW/SW_IW_M110.pdf Archived]
* [http://www.knightarmco.com/military/?term=m110 Knight's Armament Company product page on the SR-25 Series Rifles, includes the M110]
* [https://web.archive.org/web/20071123201953/http://www.militarytimes.com/multimedia/video/20071026_rc_m110sniperrifle Video demonstration of the M110 from Military Times]
* [http://www.gun-world.net/usa/kackmc/sass.htm Gun-World.net gallery of the XM110 (Chinese)]
* [http://www.globalsecurity.org/military/systems/ground/mk11.htm Global Security page on the M110] [https://web.archive.org/web/20220403233030/http://www.globalsecurity.org/military/systems/ground/mk11.htm Archived]

{{Knight's Armament Company}}
{{ModernUSInfWeaponsNav}}
{{ArmaLite AR-10 derivatives}}

[[Category:7.62×51mm NATO semi-automatic rifles]]
[[Category:Sniper rifles of the United States]]
[[Category:United States Marine Corps equipment]]
[[Category:ArmaLite AR-10 derivatives]]
[[Category:Designated marksman rifles]]
[[Category:Military equipment introduced in the 2000s]]