View source for DSR-Precision DSR-1

{{Infobox weapon
|name=DSR-1
| image= AMP DSR-1 Koalorka.jpg
| image_size = 299
|caption=The DSR-1 rifle in [[.308 Winchester]]
|origin=Germany
|type= [[Sniper rifle]]
<!-- Type selection -->
|is_ranged=Yes
<!-- Service history -->
|service=
|used_by=See ''[[#Users|Users]]''
|wars=
<!-- Production history -->
|designer=Ingolf Reuter
|design_date=
|manufacturer=DSR-precision GmbH
|production_date= Since 2000
|number=
|variants=DSR-1 Subsonic ([[7.62×51mm NATO]])<br />[[DSR-50]] Sniper Rifle ([[.50 BMG]])
<!-- General specifications -->
|weight={{convert|5.9|kg|lb|2|abbr=on}} (unloaded, without scope)
|length={{convert|990|mm|in|2|abbr=on}}
|part_length={{convert|650|mm|in|2|abbr=on}}
|width=
|height=
|crew=
<!-- Ranged weapon specifications -->
|cartridge=[[.308 Winchester]]<br />[[.300 Winchester Magnum]]<br />[[.338 Lapua Magnum]]
|caliber=
|action=[[Bolt-action]]
|rate=
|velocity=
|range={{convert|800|m|yd|0|abbr=on}} (.308 Winchester)<br />{{convert|1100|m|yd|0|abbr=on}} (.300 Win. Mag.)<br />{{convert|1500|m|yd|0|abbr=on}} (.338 Lap. Mag.)
|max_range=
|feed=5-round magazine
|sights=Quick-detachable optical sights
}}

The '''DSR-1''' is a compact [[bolt-action]] [[sniper rifle]] designed, manufactured and marketed by the German company DSR-Precision GmbH and was (until 2004) also marketed by the German company AMP Technical Services as a specialized [[sniper rifle]] for police sharpshooters. It has been adopted by the German [[counter-terrorist]] unit [[GSG 9]], as well as by other European special police units and agencies.

==Design details==

The DSR-1 system is configured in a [[bullpup]] design, with a [[free-floating barrel]]. The rifle features a fully adjustable rear [[Stock (firearm)|stock]] and cheek piece. The holder for a spare magazine is installed in the front of the trigger guard to decrease reloading time. The DSR-1 action features a [[benchrest]] match-grade, fluted barrel that is quickly interchangeable and is fixed into the receiver by three screws. The bolt features six lugs that lock directly into the barrel. The barrel is protected by a ventilated aluminium handguard and is fitted with a muzzle brake (which is very useful when firing full-power, magnum loads). The trigger is two-stage and adjustable. The DSR-1 features a manual, ambidextrous three-position safety, located above the trigger guard. For the standard version of the DSR-1 a tactical [[suppressor]] is available. The suppressor is designed to be used with high power ammunition of the DSR-1 chamberings. This suppressor effectively suppresses the muzzle blast. Naturally it cannot suppress the crack of a supersonic projectile but the direction where the bullet comes from is effectively concealed. The tactical suppressor is easily mounted in seconds on the muzzle brake using a quick release lever.

The Gutman gun magazine ''Visier'' published an article in October 2003 edition, regarding their performed test shoots with a DSR-1 to get an indication of its accuracy potential with factory ammunition.

{| class="wikitable"
|-
| '''[[.308 Winchester]] cartridge type''' || 100 m group (mm) || 100 m group ([[Minute of Angle|MOA]]) || 300 m group (mm) || 300 m group ([[Minute of Angle|MOA]])
|-
| RUAG Swiss P Target 168 gr HP-BT || 13 || 0.45 || 48 || 0.55
|-
| Federal GM 168 gr Sierra MatchKing || 14 || 0.48 || 55 || 0.63
|-
| Sellier & Bellot 168 gr HP-BT || 15 || 0.51 || 52 || 0.59
|-
| IMI 168 gr Match || 13 || 0.44 || 52 || 0.59
|-
| '''[[.300 Winchester Magnum]] cartridge type''' || 100 m group (mm) || 100 m group ([[Minute of Angle|MOA]]) || 300 m group (mm) || 300 m group ([[Minute of Angle|MOA]])
|-
| RUAG Swiss P Target 200 gs HP-BT || 13 || 0.45 || 38 || 0.43
|-
| Sellier & Bellot 168 gr HP-BT || 14 || 0.48 || 45 || 0.51
|-
| Sako 168 grs HP-BT || 14 || 0.48 || 30 || 0.34
|}

The 5-shot groups were obtained by test shooters whilst shooting from the bipod and measured from centre to centre. The table shows that with target factory ammunition the DSR-1 performs in the 0.34 - 0.63 [[Minute of Angle|MOA]] region. Whether the DSR-1 can perform better under ideal environmental conditions with [[handloading|handloads]] tailored to the particular rifle and/or if the human test shooters were a limiting factor was not tested by Visier magazine.
An article on the DSR-1 in the French  gun magazine ''Armes & Tir'' November 2001 edition corroborates the German Visier results. The  Armes & Tir test shooters used RUAG target cartridges and could shoot 200 x 300&nbsp;mm (0.69 x 1.03 [[Minute of Angle|MOA]]) groups at 1,000 m distance with a [[{{not a typo|.338}} Lapua Magnum]] chambered DSR-1 rifle.

==Variants==
The '''DSR-1 Subsonic''' is a variant optimized for [[7.62×51mm NATO]]/[[.308 Winchester]] subsonic ammunition usage. The barrel length is reduced to 310&nbsp;mm. The 8&nbsp;inch twist rate of the barrel is especially adapted to stabilize the long heavy projectiles used in subsonic ammunition. The propellant charge of subsonic ammunition is reduced to keep the bullet velocity ({{Convert|300|-|320|m/s|abbr=on}} below the speed of sound (~ {{Convert|340|m/s|abbr=on}}). At this subsonic speed the supersonic crack that arises when standard ammunition is fired is avoided. The manufacturer recommends exclusive use of subsonic ammunition for the DSR-1 Subsonic.

The '''[[DSR-50]] Sniper Rifle''' is an enlarged variant of the DSR-1. It has an integrated hydraulic recoil damping system in the buttstock and an integral  muzzle brake. The forward-venting muzzle brake, also described as a linear compensator, reduces the perceived muzzle blast. The DSR-50 Sniper Rifle is chambered for the [[{{not a typo|.50}} BMG]] (12.7×99mm NATO) cartridge that is significantly larger than the [[{{not a typo|.338}} Lapua Magnum]] cartridge, which is the biggest available chambering for the DSR-1 rifle.  Sniper rifles chambered in {{not a typo|.50}} BMG are often employed as [[anti-materiel rifle]]s.

==Users==<!-- Please respect alphabetical order -->
[[File:ARMS & Hunting 2010 exhibition (331-17).jpg|thumb|.338 Lapua Magnum chambered DSR-1 (top) and [[PGM 338]] (bottom) sniper rifles]]

<!--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|Denmark}}: Used by the [[Danish Navy]] - [[Danish Frogman Corps]]{{citation needed|date=April 2024}}
*{{flag|Germany}}: Used by the [[GSG 9]] [[counter-terrorist]] group.
*{{flag|Luxembourg}}: Used by ''[[Unité Spéciale de la Police]]'' of the [[Grand Ducal Police]].<ref>{{cite web |url=http://www.usp.lu/armement-sniper-fr.php |title=Unité Spéciale de la Police Equipement - Fusils de Sniper |year=2008 |language=fr |work=USP.lu |access-date=2009-10-13 |url-status=dead |archive-url=https://web.archive.org/web/20110722161057/http://www.usp.lu/armement-sniper-fr.php |archive-date=2011-07-22 }}</ref><ref>{{cite web|url=http://www.usp.lu/media/raids.pdf |title=L'Unite d'Intervention de la Police Luxembourgeoise |date=March 2006 |language=fr |publisher=RAIDS Magazine |access-date=2009-09-23 |url-status=dead |archive-url=https://web.archive.org/web/20110722160041/http://www.usp.lu/media/raids.pdf |archive-date=July 22, 2011 }}</ref>
*{{flag|Malaysia}}: Used by the [[Malaysian Armed Forces]].<ref>{{cite journal|last=Dan|first=Alex|date=9 February 2016|title=PASKAL Malaysian Special Forces Weapons|journal=Military Factory|issue=Small Arms|url=http://www.militaryfactory.com/smallarms/paskal-special-forces-weapons.asp|access-date=10 February 2016|archive-url=https://web.archive.org/web/20160214230914/http://www.militaryfactory.com/smallarms/paskal-special-forces-weapons.asp|archive-date=14 February 2016|url-status=dead}}</ref><ref>{{cite web |url=http://www.militaryfactory.com/smallarms/paskau-malaysian-air-force-special-forces-weapons.asp |title=PASKAU Malaysian Special Air Service Weapons |publisher=Military Factory |access-date=April 14, 2016 |archive-url=https://web.archive.org/web/20160507165324/http://www.militaryfactory.com/smallarms/paskau-malaysian-air-force-special-forces-weapons.asp |archive-date=May 7, 2016 |url-status=dead }}</ref>
*{{flag|Mauritius}}: Used by [[GIPM]].{{Citation needed|date=June 2016}}
*{{flag|Spain}}: Used by ''[[Grupo Especial de Operaciones]]'' (GEO) of the ''[[Cuerpo Nacional de Policía]]'' and ''[[Mossos d'Esquadra|Grup Especial d'Intervenció]]'' (GEI) of the ''[[Mossos d'Esquadra]]''<ref>{{cite web |url=http://www.policia.es/org_central/dao/geo/material.html |title=Web Del Grupo Especial De Operaciones (GEO) |language=es |publisher=policia.es |access-date=2010-06-11 |url-status=dead |archive-url=https://web.archive.org/web/20110720143143/http://www.policia.es/org_central/dao/geo/material.html |archive-date=2011-07-20 }}</ref>
*{{flag|Taiwan}}: Used by the [[Republic of China Army]].{{citation needed|date=November 2012}}
*{{flag|UAE}}: Used by the [[Union Defence Force (UAE)]].{{citation needed|date=April 2017}}

==See also==
*[[List of bullpup firearms]]
*[[List of sniper rifles]]
*[[Desert Tech SRS]]

==References==
{{reflist|2}}

==External links==
{{Commons category|AMP DSR-1}}
*{{Official website|http://www.dsr-precision.com/index.php }}
*[https://web.archive.org/web/20070928190954/http://www.amp-ts.com/download/DSR_engl.pdf DSR 1 product information folder]
*[http://www.defensereview.com/modules.php?name=News&file=article&sid=799 DSR-1 Bullpup Sniper System: Compact, Modular and Ultra-Accurate at defensereview.com] {{Webarchive|url=https://web.archive.org/web/20060316052455/http://www.defensereview.com/modules.php?name=News&file=article&sid=799 }}
*[https://web.archive.org/web/20110726044903/http://img73.imageshack.us/img73/2696/dsr1variationsye5.jpg Image of DSR 1 rifles]
*[http://www.gun-world.net/german/r/dsr1/nvleft.jpg Image of DSR 1 rifles]

{{Bullpup firearms}}

[[Category:Bolt-action rifles]]
[[Category:Sniper rifles of Germany]]
[[Category:.338 Lapua Magnum rifles]]
[[Category:12.7 mm sniper rifles]]
[[Category:Post–Cold War weapons of Germany]]
[[Category:Bullpup rifles]]
[[Category:Anti-materiel rifles]]
[[Category:Military equipment introduced in the 2000s]]