Brontekst bekijken van 2 cm Flak 30, Flak 38 and Flakvierling 38

{{Short description|Family of Light Anti-aircraft guns}}

{{Distinguish|10.5 cm FlaK 38}}
{{Infobox weapon
| name = 2 cm Flak 30/38
| image = File:2 cm Flak 30 Saumur.jpg
| caption = 2cm Flak 30 in travel configuration at [[Saumur]]
| origin = [[Nazi Germany]]
| type = [[Anti-aircraft gun]]
<!-- Type selection -->| is_ranged = yes
| is_artillery = yes
<!-- Service history -->| service = April 1934–1945
| used_by = See [[#Users|Users]] 
| wars = [[World War II]]
<!-- Production history -->| designer = 
| design_date = 
| manufacturer = [[Rheinmetall-Borsig]]<br>[[Mauser]]<br>[[Ostmarkwerk]]
| production_date = 1934–1945
| unit_cost = 3500 [[Reichsmark]]
| number = more than 144,000<ref name=sv>{{cite web|url=http://orbat.com/site/sturmvogel/GermWeapProd.html |title=German Weapon and Ammunition Production |access-date=30 July 2011 |url-status=dead |archive-url=https://web.archive.org/web/20110614075846/http://orbat.com/site/sturmvogel/GermWeapProd.html |archive-date=14 June 2011 }}</ref><br>(''Flakvierling'' count per barrel)<br>'''Flak 30''': 8,000+<br>'''Flak 38''': 40,000+
| variants = 2 cm Flak 38, [[Gebirgsflak 38]], Flakvierling 38
<!-- General specifications -->| weight = '''Flak 30''': {{cvt|450|kg|lb}}<br>'''Flak 38''': {{cvt|405|kg|lb}}
| length = {{convert|4.08|m|ftin|abbr=on}}
| part_length = {{convert|1.3|m|ftin|abbr=on}} L/65
| width = {{convert|1.81|m|ftin|abbr=on}}
| height = {{convert|1.6|m|ftin|abbr=on}}
| crew = 5
<!-- Ranged weapon specifications -->| cartridge = [[20×138mmB]]
| caliber = 20 mm (.79 in)
| action = 
| rate = '''Flak 30''': 280&nbsp;rpm (cyclic)/120&nbsp;rpm (practical)<br>'''Flak 38''': 450&nbsp;rpm (cyclic)/180&nbsp;rpm (practical)
| velocity = 900&nbsp;m/s (2,953&nbsp;ft/s)
| range = 2,200&nbsp;m (2,406&nbsp;yds) (anti-aircraft)
| max_range = 5,783&nbsp;m (5,230&nbsp;yds) (ground range)
| feed = 20 round box magazine
| sights = <!-- Artillery specifications -->
| breech = 
| recoil = 
| carriage = 
| elevation = -12°to ±90°
| traverse = 360°
}}
The '''Flak 30''' (''Flugzeugabwehrkanone 30'') and improved '''Flak 38''' were 20&nbsp;mm [[anti-aircraft gun]]s used by various German forces throughout [[World War II]]. It was not only the primary German light anti-aircraft gun but by far the most numerously produced German artillery piece throughout the war.  <ref> It was produced in a variety of models, notably the '''Flakvierling 38''' which combined four Flak 38 [[autocannons]] onto a single carriage.

</ref> 
== Development ==
The Germans fielded the unrelated early 2&nbsp;cm Flak 28 just after World War I, but the [[Treaty of Versailles]] outlawed these weapons and they were sold to Switzerland.

The original Flak 30 design was developed from the [[Solothurn ST-5]] as a project for the [[Kriegsmarine]], which produced the '''20&nbsp;mm C/30'''. The gun fired the "Long Solothurn", a 20&nbsp;×&nbsp;138&nbsp;mm belted cartridge that had been developed for the ST-5 and was one of the more powerful 20&nbsp;mm rounds. <ref>{{Cite web |url=http://www.quarryhs.co.uk/an_introduction_to_collecting_20.htm |title=An introduction to collecting 20 mm cannon cartridges |access-date=9 August 2016 |archive-date=20 January 2021 |archive-url=https://web.archive.org/web/20210120211110/http://www.quarryhs.co.uk/an_introduction_to_collecting_20.htm |url-status=dead }} 

The C/30, featuring a barrel length of 65 [[Caliber|calibre]]s, had a fire rate of about 120 rounds per minute. Disappointingly, it proved to have feeding problems and would often jam, which was offset to some degree by its undersized 20 round-magazine which tended to make reloading a frequent necessity. Nevertheless, the C/30 became the primary shipborne light AA weapon and equipped a large variety of German ships. The MG C/30L variant was also used experimentally as an aircraft weapon, notably on the [[Heinkel He 112]], where its high power allowed it to penetrate [[Armored car (military)| armoured car]]s and the light tanks of the era during the [[Spanish Civil War]].

[[Rheinmetall]] then started an adaptation of the C/30 for Army use, producing the '''2&nbsp;cm Flak 30'''. Generally similar to the C/30, the main areas of development were the mount, which was fairly compact. 

Set-up could be accomplished by dropping the gun off its two-wheeled trailer, "Sonderanhänger 51" (trailer 51) and levelling the gun using hand cranks. The result was a triangular base that permitted fire in all directions.

But the main problem with the design remained unsolved. The rate of fire of 120&nbsp;RPM (rounds per minute) was not particularly fast for a weapon of this calibre. Rheinmetall <ref>The original source articles used to produce this single combined version state different companies for the manufacture of the various models. It suggested that [[Mauser]] produced all of the Flak 38 and later variants.</ref>  responded with the '''2&nbsp;cm Flak 38''', which was otherwise similar but increased the rate of fire by 220&nbsp;RPM and slightly lowered overall weight to 420&nbsp;kg. The Flak&nbsp;38 was accepted as the standard Army gun in 1939, and by the Kriegsmarine as the '''C/38'''.

In order to provide airborne and mountain troops with an AA capability, [[Mauser]] was contracted to produce a lighter version of the Flak 38, which they introduced as the '''[[Gebirgsflak 38|2&nbsp;cm Gebirgsflak 38]]''' ('''2&nbsp;cm GebFlak 38'''). It featured a dramatically simplified mount using a tripod that raised the entire gun off the ground, with the additional benefit of allowing the weapon to be set up on an uneven surface. These changes reduced the overall weight of the gun to 276.0&nbsp;kg. Production started in 1941 and it entered service in 1942.

== Ammunition ==
A range of 20x138B ammunition was manufactured for 2&nbsp;cm Flak weapons, the more commonly used types are listed on the following table.  <ref>20mm Suomessa - Aseet ja ampumatarvikkeet (20mm in Finland - Weapons and Ammunition). Pitkänen S., Simpanen T, 2007. {{ISBN|978-952-5026-59-7}}.</ref>  Other types included practice rounds (marked ''Übung'' or ''Üb''. in German notation) and a number of different AP types including a high-velocity ''PzGr'' 40 round with a [[tungsten carbide]] core in an aluminium body.
[[File:Bundesarchiv Bild 101I-301-1953-24, Seine-et-Oise, Soldaten mit Flak-Geschütz.jpg|thumb|Flak 30 in travel configuration, [[Seine-et-Oise]], France, August 1944]]<figure class="mw-default-size" typeof="mw:Error mw:File/Thumb">[https://wiki-raamsdonk.nl/index.php?title=Speciaal:Uploaden&wpDestFile=Bundesarchiv_Bild_101I-301-1953-24,_Seine-et-Oise,_Soldaten_mit_Flak-Gesch%C3%BCtz.jpg <span class="mw-file-element mw-broken-media" data-width="180">Bestand:Bundesarchiv Bild 101I-301-1953-24, Seine-et-Oise, Soldaten mit Flak-Geschütz.jpg</span>]<figcaption>Flak 30 in travel configuration, [https://wiki-raamsdonk.nl/index.php?title=Seine-et-Oise&action=tinymceedit&redlink=1 Seine-et-Oise], France, August 1944</figcaption></figure>### {@&#125;&#123;SLB:0&#125; not found ###<figure class="mw-default-size" typeof="mw:Error mw:File/Thumb">[https://wiki-raamsdonk.nl/index.php?title=Speciaal:Uploaden&wpDestFile=Bundesarchiv_Bild_101I-287-0872-07,_Russland_(bei_Orel),_Soldaten_in_Stellung.jpg <span class="mw-file-element mw-broken-media" data-width="180">Bestand:Bundesarchiv Bild 101I-287-0872-07, Russland (bei Orel), Soldaten in Stellung.jpg</span>]<figcaption>Flak 30 on the [https://wiki-raamsdonk.nl/index.php?title=Eastern_Front_(World_War_II)&action=tinymceedit&redlink=1 Eastern Front]</figcaption></figure>### {@&#125;&#123;SLB:0&#125; not found ###<figure class="mw-default-size mw-halign-right" typeof="mw:Error mw:File/Thumb">[https://wiki-raamsdonk.nl/index.php?title=Speciaal:Uploaden&wpDestFile=Duitse_luchtdoelartillerie_brengt_na_een_luchtalarm_een_luchtdoelkanon_in_stelling_2155_007174.jpg <span class="mw-file-element mw-broken-media" data-width="180">Bestand:Duitse luchtdoelartillerie brengt na een luchtalarm een luchtdoelkanon in stelling 2155 007174.jpg</span>]<figcaption>Flak 38 in 1942.</figcaption></figure>### {@&#125;&#123;SLB:0&#125; not found ###[https://wiki-raamsdonk.nl/index.php?title=Pentaerythritol_tetranitrate&action=tinymceedit&redlink=1 PETN]
[[File:Bundesarchiv Bild 101I-287-0872-07, Russland (bei Orel), Soldaten in Stellung.jpg|thumb|Flak 30 on the [[Eastern Front (World War II)|Eastern Front]]]]
[[File:Duitse luchtdoelartillerie brengt na een luchtalarm een luchtdoelkanon in stelling 2155 007174.jpg|thumb|right|Flak 38 in 1942.]]
{| class="wikitable"
|- 
! width="150" | German designation
! US Abbreviation
! Projectile weight [g]
! Bursting charge
! Muzzle velocity [m/s]
! width="200" | Description
|- 
| ''Sprenggranatpatrone L'spur mit Zerleger'' || HEF-T || align="center" | 115
| align="center" | 6,2 - 6,4 g HE ([[Pentaerythritol tetranitrate|PETN]] + wax)
| align="center" | 888&nbsp;m/s || Nose fuzed tracer round, self-destruct after 5.5 - 6.5 seconds (2000m range) due to tracer burn-through.
|- 
| ''Sprenggranatpatrone L'spur W mit Zerleger'' || HEF-T || align="center" | 120
| align="center" | 6,2 - 6,4 g HE ([[Pentaerythritol tetranitrate|PETN]] + wax)
| align="center" | ? || Boat-tailed HE-Frag. nose fuzed tracer round with heat transfer. Self-destruct after 5.5 - 6.5 seconds (2000m range) due to tracer burn-through.
|- 
| ''Sprenggranatpatrone 39 Erd'' || HEF || align="center" | 132
| align="center" | 11 g HE ([[Pentaerythritol tetranitrate|PETN]] + wax)
| align="center" | 995&nbsp;m/s || HE-Frag. round with nose fuze, no tracer. Exclusively against ground targets.
|- 
| ''Brandsprenggranatpatrone L'spur (Flak) mit Zerleger'' || HEI-T || align="center" | 120-122
| align="center" | 2,4 g HE ([[Pentaerythritol tetranitrate|PETN]]) + <br>4.1 g ([[Aluminium]])
| align="center" | 900&nbsp;m/s || Nose fuze, tracer, with self-destruct after 5.5 - 6.5 seconds (2000m range) due to tracer burn-through.
|- 
| ''Brandsprenggranatpatrone ohne L'spur (Flak) mit Zerleger'' || HEI || align="center" | 117-120
| align="center" | 22 g total <br>20 g HE Hexogen 5 ([[RDX]]) <br>+ ([[Zinc]]) powder + wax
| align="center" | 900&nbsp;m/s || Boat-tailed nose fuzed HEI round, no tracer, self-destruct after 5.5 - 8 seconds flight (2000-2800m range). Lack of tracer and high density of incendiary allows heavy filling load.
|- 
| ''Bransprenggranatpatrone L'spur W mit Zerleger'' || HEFI-T || align="center" | 119-120
| align="center" | 6,6 - 6,8 g HE ([[Pentaerythritol tetranitrate|PETN]]) + ([[Aluminium]]) + wax
| align="center" | 900&nbsp;m/s || Boat-tailed nose fuzed HE-Frag. incendiary tracer round with heat transfer. Self-destruct after at 2000m range due to tracer burn-through.
|- 
| ''Brandsprenggranatpatrone vk. L'spur mit Zerleger'' || HEI-T || align="center" | 116
| align="center" | 19 g HE Hexogen 5 ([[RDX]]) + ([[Aluminium]]) or ([[Zinc]]) powder + wax
| align="center" | ? || Boat-tailed nose fuzed HEI tracer round. Self-destruct after 6 second (2200-2400m range) due to tracer burn-through.

|- 
| ''Brandsprenggranatpatrone vk. L'spur W mit Zerleger'' || HEI-T || align="center" | 116
| align="center" | 19 g HE Hexogen 5 ([[RDX]]) + ([[Aluminium]]) or ([[Zinc]]) powder + wax
| align="center" | ? || Boat-tailed nose fuzed HEI tracer round with heat transfer. Self-destruct after 5.5 second (2000m range) due to tracer burn-through.
|- 
| ''Brandsprenggranatpatrone mit Zerleger?'' || HEI || align="center" | 100
| align="center" | ? g HE ? + <br>? g incendiary ([[White phosphorus|WP]])
| align="center" | 1050&nbsp;m/s || Nose fuze, no tracer, with self-destruct?
|- 
| ''Brandsprenggranatpatrone L'spur mit Zerleger?'' || HEI-T || align="center" | 100
| align="center" | ? g HE ? + <br>? g incendiary ([[White phosphorus|WP]])
| align="center" | 1050&nbsp;m/s || Nose fuze, tracer, with self-destruct? after ? second (?m range) due to tracer burn-through.
|- 
| Minengeschosspatrone X L'spur mit Zerleger || HEI-T ([[Mine shell|M]]) || align="center" | 109
| align="center" | 24,5 - 25&nbsp;g HE HA 41 ([[RDX]] + ([[Aluminium]]) powder + wax)
| align="center" | 950 || Boat-tailed nose fuzed HE Mine-shell tracer round, self-destruct.
|- 
| ''Panzergranatpatrone L'spur mit Zerleger'' || AP-T || align="center" | 146-148
| align="center" | 2,4 g ([[Pentaerythritol tetranitrate|PETN]]) + <br>? g ([[White phosphorus|WP]])
| align="center" | 830&nbsp;m/s || Base-fuzed tracer round, with self-destruct due to tracer burn-through after 4.5 second flight (1800m range).
|- 
| ''Panzergranatpatrone L'spur mit Zerleger'' || AP-T || align="center" | 159
| align="center" | 2,5 g ([[Pentaerythritol tetranitrate|PETN]]) + <br>? g ([[White phosphorus|WP]])
| align="center" | ? || Boat-tailed base-fuzed tracer round, with self-destruct after 2 second flight (1000m range).
|- 
| ''Panzergranatpatrone 39'' || AP || align="center" | 148
| align="center" | w/o filling
| align="center" | 780&nbsp;m/s || No fuze, no tracer or self-destruct function.
|- 
| ''Panzergranatpatrone 40 L'spur'' || APIHC-T <br>APICR-T <br>HVAPI-T || align="center" | 100-101
| align="center" | Light metal shell, <br>special steel core
| align="center" | 1050&nbsp;m/s || Tungsten carbide core. Tracer round, with no fuze or self-destruct function. Tracer burn-through after 0,9 - 1.5 second flight (600m range).<br>Penetrating effect with incendiary effect due to melting of light metal tip.
|- 
| ''Panzerbrandgranatpatrone (Phosphor) L'spur ohne Zerleger'' || API-T || align="center" | 148
| align="center" | 3,0 g incendiary ([[White phosphorus|WP]])
| align="center" | 780&nbsp;m/s || Tracer round, with no fuze or self-destruct function. Tracer burn-through after 1,8 second flight (1000m range).
|- 
| ''Panzergranatpatrone L'spur ohne Zerleger'' || AP-T || align="center" | 143
| align="center" | w/o filling
| align="center" | 800&nbsp;m/s || Tracer round, with no fuze or self-destruct function. Tracer burn-through after 1,8 second flight (1000m range).
|- 
| ''Panzersprenggranatpatrone L'spur ohne Zerleger'' || APHE-T || align="center" | 121
| align="center" | 3,6 g HE ([[Pentaerythritol tetranitrate|PETN]])
| align="center" | 900&nbsp;m/s || Base-fuzed tracer round, no self-destruct.
|- 
| ''Panzersprenggranatpatrone L'spur mit Zerleger (Kriegsmarine)(Luftwaffe)'' || APHE-T || align="center" | 121
| align="center" | 3,6 g HE ([[Pentaerythritol tetranitrate|PETN]])
| align="center" | 900&nbsp;m/s || Base-fuzed tracer round, self-destruct after 2 second flight (1000m range) or 4.3 - 4.6 seconds flight (1800m range) due to tracer burn-through.
|}

== 2 cm Flakvierling 38 ==
{{Infobox weapon
|name= 2 cm Flakvierling 38
|image=Bundesarchiv Bild 183-J08339, Ausbildung an der Vierlings-Flak.jpg
|caption=Members of the [[Panzer-Grenadier-Division Großdeutschland]] train with a 2,0cm Flakvierling 38 (1943)
|origin= [[Nazi Germany]]
|type= [[Anti-aircraft gun]]
<!-- Type selection -->
|is_ranged=yes
|is_artillery=yes
<!-- Service history -->
|service=March 1940–1945
|used_by=[[Nazi Germany]]
|wars=[[World War II]]
<!-- Production history -->
|designer=Mauser
|design_date=1940
|manufacturer=[[Mauser]]<br>[[Rheinmetall]]<br>Ostmarkwerk
|production_date=1940–1945
|number=3,768
|variants=
<!-- General specifications -->
|weight=1,509 kg (3,327 lbs) with trailer
|length={{convert|4.08|m|ftin|abbr=on}}
|part_length={{convert|1.3|m|ftin|abbr=on}} L/65
|width={{convert|1.81|m|ftin|abbr=on}}
|height={{convert|1.6|m|ftin|abbr=on}}
|crew= 8
<!-- Ranged weapon specifications -->
|cartridge=[[20×138mmB]]
|caliber=2,0cm (.78 in)
|action=[[Recoil operation]]<ref>[https://archive.org/details/TME9-9228/page/n95/mode/2up TM E 9-9228 Technical Manual Enemy (German) 2CM Flakvierling 38 (German 20-MM Antiaircraft Gun, Four-Barreled Mount) 1943]</ref>
|rate=1,800 rpm ''(Cyclic)''<br> 800 rpm ''(Practical)''
|velocity= 900 m/s (2,953 ft/s)
|range=2,200&nbsp;m (2,406&nbsp;yds) (anti-aircraft)
|max_range=5,783&nbsp;m (5,230&nbsp;yds) (ground range)
|feed=4x 20 round box magazines
|sights=
<!-- Artillery specifications -->
|breech=[[Rotating bolt]]
|recoil=
|carriage=Sd.Ah 52 (Special Trailer 52)
|elevation=- 10° - +100°
|traverse=360°
}}
Even as the Flak 30 was entering service, the Luftwaffe and ''Heer'' (army) branches of the ''Wehrmacht'' had doubts about its effectiveness, given the ever-increasing speeds of low-altitude [[fighter-bomber]]s and attack aircraft. The Army in particular felt the proper solution was the introduction of the [[3.7 cm Flak 18/36/37|37&nbsp;mm calibre weapons]] they had been developing since the 1920s, which had a rate of fire about the same as the Flak 38 but fired a round with almost eight times the weight. This not only made the rounds deadlier on impact, but their higher energy and [[ballistic coefficient]]<figure class="mw-default-size mw-halign-left" typeof="mw:Error mw:File/Thumb">[https://wiki-raamsdonk.nl/index.php?title=Speciaal:Uploaden&wpDestFile=Bundesarchiv_Bild_101I-005-0015-27,_Jugoslawien,_Polizeieinsatz,_Truppentransport.jpg <span class="mw-file-element mw-broken-media" data-width="180">Bestand:Bundesarchiv Bild 101I-005-0015-27, Jugoslawien, Polizeieinsatz, Truppentransport.jpg</span>]<figcaption>The rear-location wheelhouse of this [https://wiki-raamsdonk.nl/index.php?title=Siebel_ferry&action=tinymceedit&redlink=1 Siebel ferry] features a ''Flakvierling'' quadmount AA battery to defend it in 1943 Yugoslavia.</figcaption></figure>### {@&#125;&#123;SLB:0&#125; not found ###[https://wiki-raamsdonk.nl/index.php?title=Half-track&action=tinymceedit&redlink=1 half-tracks] allowed them to travel much longer distances, allowing the gun to engage targets at longer ranges. This meant it could keep enemy aircraft under fire over longer time spans.

The 20&nbsp;mm weapons had always had weak development perspectives, often being reconfigured or redesigned just enough to allow the weapons to find a use. Indeed, it came as a surprise when Rheinmetall introduced the '''2&nbsp;cm Flakvierling 38''', which improved the weapon just enough to make it competitive again. The term ''Vierling'' literally translates to "quadruplet" and refers to the four 20&nbsp;mm autocannon constituting the design.

The ''Flakvierling'' weapon consisted of quad-mounted 2&nbsp;cm Flak 38 AA guns with collapsing seats, folding handles, and [[ammunition]] racks. The mount had a triangular base with a jack at each leg for levelling the gun. The tracker traversed and elevated the mount manually using two handwheels. When raised, the weapon measured 307&nbsp;cm (10 feet 1&nbsp;inch) high.

Each of the four guns had a separate magazine that held only 20 rounds. This meant that a maximum combined rate of fire of 1,400 rounds per minute was reduced practically to 800 rounds per minute for combat use – which would still require that an emptied magazine be replaced every six seconds, on each of the four guns. This is the [[Rate of fire|''attainable rate of fire'']]; the ''sustained rate of fire'' is significantly lower due to heat buildup and barrel erosion. Automatic weapons are typically limited to roughly 100 rounds per minute per barrel to give time for the heat to dissipate, although this can be exceeded for short periods if the firing window is brief.

The gun was fired by two pedals &mdash; each of which fired two diametrically opposite barrels &mdash; in either semi-automatic or automatic mode. The effective vertical range was 2,200 metres. It was also used just as effectively against ground targets as it was against low-flying aircraft.  <ref>[https://books.google.com/books?id=JZ9cSQNeK9cC&dq=flakvierling+ground+target&pg=PA166 The Encyclopedia of Weapons of World War 2]</ref>  

=== Mounting versatility ===
[[File:Bundesarchiv Bild 101I-005-0015-27, Jugoslawien, Polizeieinsatz, Truppentransport.jpg|thumb|left|The rear-location wheelhouse of this [[Siebel ferry]] features a ''Flakvierling'' quadmount AA battery to defend it in 1943 Yugoslavia.]]
The ''Flakvierling'' four-autocannon anti-aircraft ordnance system, when not mounted into any self-propelled mount, was normally transported Sd. Ah. 52 trailer, and could be towed behind a variety of [[half-track]]s or trucks, such as the [[Opel Blitz]] and the armoured [[Sd.Kfz. 251]] and unarmored [[Sd.Kfz. 7#Variants|Sd.Kfz. 7/1]] and [[Sd.Kfz. 11]] artillery-towing half-track vehicles. Its versatility concerning the vehicles it could be mounted to included its use even on tank hulls to produce fully armoured mobile anti-aircraft vehicles, such as the [[Panzer IV]]-based low-production [[Wirbelwind]] and original [[Möbelwagen]] prototype-design, anti-aircraft tanks. In Kriegsmarine use, it was fitted to [[U-boat]]s, [[Siebel ferry|Siebel ferries]] and ships to provide short-range anti-aircraft defence, and was also employed in fixed installations around ports, harbours and other strategic naval targets. The Flakvierling was also a common fixture on trains, even on [[Führersonderzug|Hitler's own command train]], where pairs of them were mounted on either end of a "camelback" flatbed car and then covered to make it look like a boxcar, sometimes with a pair of such twin-''Flakvierling'' mount cars for defence, one near each end of Hitler's ''Führersonderzug'' train.

== Users ==
*{{flagcountry|Nazi Germany}}
*{{flag|Lithuania}} 150 Flak 30 (20&nbsp;mm lėktuvinis automatinis pabūklas LAP) bought in 1939.
*{{flag|Finland}} 50 Flak 30 (named 20 Itk/30 BSW) delivered from Germany in 1939. 113 Flak 38 (named 20 ItK/38 BSW) guns bought during the [[Continuation War]].
*{{flag|Greece}} 108 total in service
*{{flag|Romania}} 300 ordered in September 1940, the delivery beginning in May 1941, known as ''Gustloff'' guns (after one of their manufacturers)  <ref>Mark Axworthy, London: Arms and Armour, 1995, ''Third Axis, Fourth Ally: Romanian Armed Forces in the European War, 1941–1945'', p. 30</ref> 
*{{flag|Denmark}} 69 in service from 1945 to 1955 in The Royal Danish Navy, where it was known as 20&nbsp;mm Mk M/39 LvSa, mounted on minesweepers of the SØLØVE class and motor torpedo boats of the GLENTEN class.
*{{flag|Sweden}} 56 Flak 30 bought in 1939, designated ''20 mm lvakan m/39'' in Swedish service.
*{{flag|Netherlands}} 30 Flak 30 guns were bought and sent over for the Dutch East Indies army in 1938.

== See also ==
*[[List of anti-aircraft guns]]
*[[List of artillery by country#Germany|List of artillery of Germany]]
*[[MG 151 cannon]] - German 20mm aircraft cannon developed during World War II.
*[[MG FF cannon]] - German 20mm aircraft cannon during early World War II. Developed from the Swiss [[Oerlikon FF]].
*[[2 cm KwK 30]] - variant for armored cars and light tanks, slightly shortened barrel
*[[20 mm Polsten]] - Equivalent British 20mm anti-aircraft gun, developed from a Polish design which was, in turn, derived from a version of the Swiss Oerlikon, The blueprints were brought to Britain by its creators after [[Invasion of Poland]].
*[[Breda Model 35]] - Equivalent Italian 20mm anti-aircraft gun.
*[[Hispano-Suiza HS.404]] - Equivalent French-designed 20mm anti-aircraft gun used by many countries during World War II (also used to arm various aircraft).
*[[Type 98 20 mm AA machine cannon]] - Japanese 20mm anti-aircraft gun during World War II.
*[[Type 2 20 mm AA machine cannon]] - Japanese 20mm anti-aircraft gun derived from the German Flak 38 during World War II, supplementing the earlier Type 98.
*[[m/40 automatic cannon|Automatkanon m/40]] - Equivalent Swedish 20mm anti-aircraft gun.

== Similar ==
*[[M45 Quadmount]], the closest Allied equivalent to the ''Flakvierling'' system

== Notes ==
{{Reflist|group=N}}

== References ==
{{Reflist}}

== Bibliography ==
* Gander, Terry and Chamberlain, Peter. ''Weapons of the Third Reich: An Encyclopedic Survey of All Small Arms, Artillery and Special Weapons of the German Land Forces 1939-1945''. New York: Doubleday, 1979 {{ISBN|0-385-15090-3}}
* Hogg, Ian V. ''German Artillery of World War Two''. 2nd corrected edition. Mechanicsville, PA: Stackpole Books, 1997 {{ISBN|1-85367-480-X}}

== External links ==
* [https://www.pinterest.co.uk/ricknaystatt/2-cm-flak-30 Images and models of the 2 cm FlaK at Pinterest]
* [https://www.awm.gov.au/collection/C153291 Image of the 2 cm FlaK 38 Anti Aircraft Gun in Desert camouflage at the Australian war memorial page]
{{WWIIGermanGuns}}

{{Use dmy dates|date=June 2017}}

{{DEFAULTSORT:2 Cm Flak 30 38 Flakvierling}}
[[Category:20 mm artillery]][[Category:Autocannon]][[Category:Naval anti-aircraft guns]][[Category:Anti-aircraft guns of Germany]][[Category:Artillery of Switzerland]][[Category:World War II anti-aircraft guns]][[Category:World War II artillery of Germany]]

[[Category:World War II military equipment of Greece]][[Category:Rheinmetall]][[Category:Military equipment introduced in the 1930s]]

[[ko:Flak 38]][[Categorie:Duits gevechtsvoertuig in de Tweede Wereldoorlog]][[Categorie:Duits wapen in de Tweede Wereldoorlog]]
[[no:Flak 38]]