View source for Mitrailleuse d'Avion Browning - F.N. Calibre 13,2 mm

{{Infobox weapon
| name               = <small>''Mitrailleuse d'Avion Browning - F.N. Calibre 13,2 mm''</small><br>13.2 mm FN Browning
| image              = File:13,2 mm browning FN (clear).png
| image_size         = 300
| alt                =
| caption            = Swedish 13.2 mm automatkanon m/39A
| type               = [[Aircraft ordnance]]:<br>1. – [[machine gun]]<ref name="FN 39"/><br>2. – [[Shell (projectile)|shell-firing]] [[gun]]<ref name="flight 39"/><br>3. – [[autocannon]]<ref name="beskrivning 39A"/>
| origin             = {{Flag|Belgium}}
<!-- Type selection -->
| is_ranged          = Yes
<!-- Service history -->
| service            = ''[[Swedish Air Force]]''<br>1939–1957: frontline<ref name="FVAMKAT 57">{{Cite book|last1=Henricson|first1=A.|title=Flygvapnets&nbsp;eldvapenammunition,&nbsp;fastställd&nbsp;1957|last2=Malmberg|first2=E.|publisher=Royal Swedish Air Force Materiel Administration publishing section|year=1957|edition=1961|location=Stockholm, Sweden|language=Swedish}}</ref><br>1951–2007: exercise<ref name="AMKAT 01">{{Cite book|title=AMKAT, Ammunitionskatalog, Data och bilder, Gemensam|publisher=Defence Materiel Administration|year=2001|edition=2007|location=Stockholm, Sweden|language=Swedish}}</ref>
| used_by            = {{Flag|Sweden}}<br>{{Flag|Romania}}<br>{{Flag|Finland}}
| wars               = [[World War II]]
<!-- Production history -->
| designer           =
| design_date        = 1938
| manufacturer       = [[FN Herstal]]<br>[[L. M. Ericsson|L.M.E]]
| unit_cost          =
| production_date    = 1939-ca 1946
| number             =
| variants           = See [[#Variants|Variants]]
<!-- General specifications -->
| spec_label         =
| weight             = ''Cannon weight'': {{cvt|24.3|kg|lb}}<br>''Barrel weight'': {{cvt|3.3|kg|lb}}<br>''Link weight'': {{cvt|0.017|kg|lb}}
| length             = {{cvt|1415|mm|in}}<br>({{cvt|1450|mm|in}} with flash hider)
| part_length        = {{cvt|816.5|mm|in}}<br>({{cvt|919|mm|in}} with flash hider)
| width              =
| height             =
| diameter           =
| crew               =
| passengers         =
<!-- Ranged weapon specifications -->
| cartridge          = [[13.2×99mm Hotchkiss]]<br>[[12.7×99mm Browning]]
| cartridge_weight   = on average {{cvt|120|g|lbs}} (13.2 x 99 Hotchkiss)
| caliber            = {{cvt|13.2|mm|in}} (original)<br>{{cvt|12.7|mm|in}} (later)
| barrels            = The barrel had eight constantly rising grooves going right.<br>{{cvt|400|mm|in}}/revolution<br>Groove depth was {{cvt|0.16|mm|in}}
| action             = [[Electrical]]
| rate               = 1&nbsp;080 [[rpm]] (standard)<br>600 [[rpm]] (lowest)<br>1&nbsp;500 [[rpm]] (highest)
| velocity           = 810–900 m/s (13.2 x 99 Hotchkiss)
| range              = [[Tracer ammunition|Tracer]] to {{cvt|1000|m|yd}}
| max_range          = ca {{cvt|7000|m|yd}}
| feed               = [[Belt fed]] (able to feed from both left and right)
| sights             = Reflexsikte m/37 ([[Saab 18]] & [[Saab 21|21]])<br>Reflexsikte m/42B ([[FFVS J 22]])<br>Gyroreflexsikte K-14 ([[Saab 21]]A-3)
<!-- For all -->
| ref                = <small></small>
}}
'''Browning Aircraft Machine Gun - F.N. Caliber 13.2&nbsp;mm''' ({{langx|fr|'''Mitrailleuse d'Avion Browning - F.N. Calibre 13,2&nbsp;mm'''}}), more commonly known as the ''13.2&nbsp;mm FN Browning'',<ref name="Vanator">{{Cite book|last=Brînzan|first=Radu|title=Vânător – Romanian Hunter, The I.A.R.80 and I.A.R.81 in Ultimate Detail|publisher=Mushroom Model Publications|year=2014|isbn=9788363678401|pages=285|language=English}}</ref> but also ''13.2&nbsp;mm Browning-F.N.'',<ref name="flight 39">{{Cite journal|last=King|first=H. F.|date=1939-12-21|title=A Survey of the armament of single seat fighters|url=https://drive.google.com/file/d/123EQ22pAVgqtaCuE5OkADLirIfyQAekX/view?usp=sharing|journal=Flight|volume=December 21, 1939|pages=505–509}}</ref> ''F.N. Caliber 13.2 mm'',<ref name="VKT 12,70 LKk/42">{{Cite web|title=VKT 12,70 LKk/42|url=https://www.vlmyrsky.fi/historia/26|url-status=live|archive-url=https://web.archive.org/web/20210119135151/https://www.vlmyrsky.fi/historia/26|archive-date=2021-01-19|access-date=2022-01-02|website=vlmyrsky.fi}}</ref> ''FN Browning M.1939'' and the like, was a {{cvt|13.2|mm|in}} caliber, [[Shell (projectile)|shell-firing]], [[heavy machine gun]] for aircraft use,<ref name="flight 39"/><ref name="FN 39">{{Cite book|title=La mitrailleuse Browning FN|publisher=Fabrique Nationale Herstal|year=1939|location=Belgium|pages=24, 25|language=French|chapter=XII.&nbsp;Les munitions&nbsp;F.N.&nbsp;calibre&nbsp;13,2&nbsp;mm}}</ref> designed by [[Fabrique Nationale]] (F.N.) in [[Herstal]], [[Belgium]], as a private export venture during the final years prior to [[World War II]].<ref name="flight 39"/>
Even though it gained great interest during its limited time on the export market, it only managed to be exported to the air forces of [[Romania]] and [[Sweden]] prior to the [[German occupation of Belgium during World War II|German invasion of Belgium in 1940]], later also being [[Copyright infringement|pirate produced]] in [[Finland]] with the help from Sweden.<ref name="Thorsson 75"/><ref name="tapatalk lkk"/>
== Development and description ==
The 13.2&nbsp;mm FN Browning was developed by FN as an improved version of the [[Browning Arms Company|Browning]] {{Convert|.50|in|mm|1|abbr=on}} air-cooled [[M2 Browning|MG53]] aircraft machine gun. Improvements to the original design included: making the weapon lighter, increasing the [[rate of fire]] and offering it in not just [[12.7×99mm Browning]], but also [[13.2×99mm Hotchkiss]],<ref>{{Cite web|last=McCollum|first=Ian|date=2021-04-19|title=Colt's MG52-A: Water-Cooled 50-Caliber Heavy Machine Gun for the World|url=https://www.youtube.com/watch?v=WEMh4-6xDO8|access-date=2021-12-31|website=youtube.com}}</ref> the latter cartridge effectively being a 12.7×99mm Browning cartridge but with a caliber of {{Convert|13.2|mm|in|2|abbr=on}}.<ref name="municion 13.2x99">{{Cite web|title=13,2x96 Hotchkis Short / MUNICION.ORG|url=http://www.municion.org/13_2x99/13_2x96.htm|url-status=dead|archive-url=https://web.archive.org/web/20190330002134/http://www.municion.org/13_2x99/13_2x96.htm|archive-date=2019-03-30|access-date=2019-03-30|website=www.municion.org}}</ref> The 13.2×99mm Hotchkiss cartridge was the initial cartridge developed for the [[13.2 mm Hotchkiss machine gun]], being replaced by the 13.2×96mm Hotchkiss cartridge in 1935,<ref name="municion 13.2x99"/> and was thus used and produced by a wide variety of countries in [[Europe]]. To further improve on the design, FN developed a [[high-explosive shell]] against air targets for the 13.2×99mm Hotchkiss cartridge, purpose built for the 13.2&nbsp;mm FN Browning.<ref name="FN 39"/>
While basically a [[heavy machine gun]], the implementation of exploding bullets in the 13.2&nbsp;mm caliber allows this weapon to be called a "cannon",<ref name="beskrivning 39A">{{Cite book|last1=Söderberg|first1=N.|title=Beskrivning över 12,7&nbsp;mm akan m/39, 12,7&nbsp;mm akan m/45, 13,2&nbsp;mm akan m/39, 13,2&nbsp;mm akan m/39A, 1949 års upplaga|last2=Björkstand|first2=N.|publisher=Royal Swedish Air Force Materiel Administration, Kungliga boktryckeriet, P. A. Norstedt & Söner|year=1949|edition=1955|location=Stockholm, Sweden|language=Swedish}}</ref> or as the [[magazine]] ''[[Flight International]]'' described it in 1939, a "shell firing gun".<ref name="flight 39"/> Normally, especially at the time, conventional explosive munition starts being offered at caliber 20&nbsp;mm.<ref name="flight 39"/>
=== Interest & export ===
Due to the above-mentioned features, the 13.2&nbsp;mm FN Browning drew a lot of interest from a number of nations when it entered the export market in 1939.<ref name="flight 39"/> Some interested countries of note were: the [[Finnish Air Force]],<ref name="VKT 12,70 LKk/42"/> the [[Royal Romanian Air Force]],<ref name="Vanator"/> the [[Swedish Air Force]],<ref name="Thorsson 75"/> the [[Royal Netherlands Army Aviation Brigade]]<ref name="airwar d23">{{Cite web|title=Fokker D.XXIII|url=http://www.airwar.ru/enc/fww2/fokd23.html|access-date=2022-01-02|website=airwar.ru}}</ref> and the [[Belgian Air Component|Royal Belgian Military Aviation]] themselves.<ref name="r38">{{Cite web|title=Microsoft Word - Renard_R38.doc|url=http://www.fnar.be/avionsjpdecocq/Renard_R38pwd.pdf|url-status=live|archive-url=https://web.archive.org/web/20210609035332/http://www.fnar.be/avionsjpdecocq/Renard_R38pwd.pdf|archive-date=2021-06-09|access-date=2022-01-02|website=fnar.be}}</ref> The Dutch planned to use the 13.2 mm FN Browning in their in-development [[Fokker D.XXIII]] [[fighter aircraft]],<ref name="airwar d23"/> while the Belgians had plans on using it in their in-development [[Renard R.36]] fighter aircraft and its subsequent variants [[Renard R.37|R.37]],<ref name="r37">{{Cite web|title=Microsoft Word - Renard_R37.doc|url=http://www.fnar.be/avionsjpdecocq/Renard_R37pwd.pdf|access-date=2022-01-02|website=fnar.be}}</ref> [[Renard R.38|R.38]]<ref name="r38"/> and [[Renard R.42|R.42]].<ref>{{Cite web|title=Belgian Beauties; The Renard Fighters|url=https://www.youtube.com/watch?v=CtZ3_PjAHHU|access-date=2022-01-03|website=youtube.com}}</ref> However with the start of WW2, and the subsequent [[German occupation of Belgium during World War II|invasion and occupation of Belgium]] by [[Nazi Germany]] in the summer of 1940, the 13.2&nbsp;mm FN Browning was, in that limited time, only exported to [[Romania]]<ref name="Vanator" /> and [[Sweden]].<ref name="Thorsson 75">{{Cite book|last=Thorsson|first=Nils|title=Historik och kartläggning av vapenmateriel för flygplan|year=1975|location=Arboga, Sweden|pages=0–14}}</ref>
== Users ==
=== Romania ===
The few weapons that were sold to Romania were at first used on their [[SM.79]] bombers but later saw use on their own indigenous [[IAR 80]]B fighter plane. In Romania the weapons saw combat and were considered equal to the 20&nbsp;mm weapons used in the Romanian air force such as the [[MG 151 cannon|MG 151/20]].
=== Sweden ===
Sweden gained interest in the 13.2&nbsp;mm FN Browning in 1938 and ordered it from FN in 1939, as well as a license to produce the weapon in Sweden.<ref name="Thorsson 75"/> The order was ready for delivery by the summer of 1940, just prior to the [[German occupation of Belgium during World War II|German invasion of Belgium]]. Delivery of the guns, munition and documentation was initially meant to be sent by train to Sweden, but due to the German invasion the delivery had to be rushed by way of ship.<ref name="Thorsson 75"/> In Sweden the Belgian produced weapons received the designation ''13,2&nbsp;mm automatkanon m/39'', abbreviated as ''13,2&nbsp;mm akan m/39'', meaning "13.2&nbsp;mm autocannon m/39".<ref name="beskrivning 39A"/> Swedish license production of the 13.2&nbsp;mm FN Browning was handled by [[LM Ericsson]] (LME) and production took place in a basement complex in central [[Stockholm]].<ref name="Thorsson 75"/> Due to insufficient documentation and construction quality, a number of changes had to be made to the weapon design for Swedish production to begin, leading to a new variant being produced.<ref name="Thorsson 75"/> The Swedish produced variant therefore got the designation ''13,2&nbsp;mm automatkanon m/39A'' (''13,2&nbsp;mm akan m/39A'').<ref name="beskrivning 39A"/> In Sweden the 13,2&nbsp;mm akan m/39 became their main aircraft weapon of WW2, playing a similar role to what the {{Convert|.50|in|mm|1|abbr=on}} AN-M2 Browning did for the Americans during World War II where basically all warplanes were armed with it as their main armament. While the weapon never saw combat in the Swedish Air Force, it remained in use for an extended period.<ref name="beskrivning 39A"/>
After the war it became apparent that 13.2×99mm ammunition would be too expensive to come by and with the purchase of surplus [[P-51D]] Mustangs (in Sweden designated J 26) armed with 12.7×99mm AN-M2 Browning guns in 1945, it was decided in 1947 to re-chamber the 13.2&nbsp;mm akan m/39 guns for the readily available 12.7×99mm Browning ([[.50 BMG]]) cartridge.<ref name="Thorsson 75"/> Conversion to the new cartridge only required a barrel swap due to the similarities between the 13.2×99mm and 12.7×99mm cartridges, and both types of barrels (12.7&nbsp;mm and 13.2&nbsp;mm) was available simultaneously for a few years to allow the existing 13.2&nbsp;mm stock to be used up in live fire exercise.<ref name="Thorsson 75"/> The 13.2&nbsp;mm cartridge was written off from manuals around 1950. Even though the 12.7&nbsp;mm cartridge was considered a downgrade from the 13.2&nbsp;mm cartridge with its high-explosive ammunition,<ref name="Thorsson 75"/> it did not matter, as Sweden's main fighter fleet by then had been upgraded to [[De Havilland Vampire|Vampire]] fighter planes armed with 20&nbsp;mm cannons.<ref>{{Cite web|url=https://www.aef.se/Flygvapnet/Notiser/J28A,_B,_C_Vampire_notis_2.htm|title=Vampire in Sweden}}</ref> The last frontline [[military aircraft]] to use the 12.7&nbsp;mm akan  m/39s was the [[Saab 18|SAAB T 18B]] coastal attacker aircraft which left service in 1959.
From the early 1950s onward however, the 12&nbsp;mm akan m/39 started being used as a training weapon for jet fighters, such as the [[de Havilland Vampire|de Havilland J 28 Vampire]]<ref>{{Cite book|title=SFI, Speciell förarinstruktion, Fpl 28 B, fastställd 1953|publisher=[[Royal Swedish Air Force Materiel Administration]] KFF|year=1953|location=Sweden|pages=several|language=Swedish}}</ref> and the [[Saab 29 Tunnan|SAAB J 29 Tunnan]],<ref>{{Cite book|title=SFI, Speciell förarinstruktion, Fpl 29 A & B, fastställd 1954|publisher=[[Royal Swedish Air Force Materiel Administration]] KFF|year=1954|location=Sweden|pages=several|language=Swedish}}</ref> were it could be mounted in place of their main cannon armament by the use of a small add-on. This use continued all the way to the early 2000s<ref>{{Cite book|title=AMKAT, Ammunitionskatalog, Gemensam, 2001 års upplaga|publisher=[[Swedish Defence Materiel Administration]] (FMV)|year=2001|location=Sweden|pages=41, 42, 43|language=Swedish}}</ref> when its last training carrier, the [[Saab 37 Viggen]], left service in 2007.
=== Finland ===
Finland never formally got the chance to buy the Belgian design before the invasion of Belgium, however through their connections with Sweden they managed to get hold of the manufacturing blueprints for the weapon which allowed them to produce it in Finland.<ref name="Thorsson 75"/><ref name="tapatalk lkk">{{Cite web|last=Ford|first=Dan|date=2014-05-01|title=Browning machine gun?|url=https://www.tapatalk.com/groups/warbirdsforum/browning-machine-gun-t1477.html|url-status=live|archive-url=https://web.archive.org/web/20180123131624/https://www.tapatalk.com/groups/warbirdsforum/browning-machine-gun-t1477.html|archive-date=2018-01-23|access-date=2021-11-18|website=tapatalk.com}}</ref> Since Finland already was producing [[12.7×99mm Browning]] ammunition it was decided to produce the weapon chambered for that cartridge.<ref name="Thorsson 75"/><ref name="tapatalk lkk"/> The Finnish variant was produced by the Finnish State Rifle Factory [[Valtion Kivääritehdas]] (VKT) and received the designation ''12,70&nbsp;mm LentoKoneKivääri m/42'', abbreviated as ''12,70 LKk/42'', meaning ''{{cvt|12.7|mm|in}} aircraft machine gun m/42''.<ref name="Thorsson 75"/><ref name="tapatalk lkk"/>
In Finland the weapon was used to rearm many of Finland's fighter aircraft as many of them were older pre-war designs armed with weak or unreliable weapons. The LKk/42 guns were mainly fitted to Finnish [[Curtiss 75]] Hawk<ref name="Stenman CU">{{Cite book|last1=Keskinen|first1=Kalevi|title=Suomen Ilmavoimien Historia 05, Curtiss Hawk 75 A, P-40M|last2=Stenman|first2=Kari|last3=Niska|first3=Klaus|publisher=Tietoteos|year=1975|isbn=951-9035-22-2|location=Finland|pages=6|language=Finnish}}</ref> and [[Brewster B-239]] Buffalo<ref name="warbirdforum">{{Cite web|last=Kolju|first=Panu|date=May 2019|title=Finnish-built Brownings for the Buffalo|url=https://www.warbirdforum.com/gun.htm|url-status=live|archive-url=https://web.archive.org/web/20211118014809/https://www.warbirdforum.com/gun.htm|archive-date=2021-11-18|access-date=2021-11-18|website=warbirdforum.com}}</ref> planes, but also to the indigenous Finnish [[VL Myrsky]] fighter aircraft.<ref name="warbirdforum"/> The weapon was also planned to be used on the [[VL Humu]] and [[VL Pyörremyrsky]] fighter aircraft if they were to enter production. It was occasionally fitted as a field modification, such as on Finnish [[Arado Ar 196|Arado 196s]], to increase firepower.
After WWII the Finnish would use the 12,70 LKk/42 as training weaponry in aircraft such as the [[Saab 35 Draken]] and [[BAE Hawk]].<ref name="warbirdforum"/>
== Variants ==
*{{flagicon|Belgium}} '''Mitrailleuse d'Avion Browning - F.N. Calibre 13,2&nbsp;mm''' ('''13,2&nbsp;mm Browning-F.N.''') – Original weapons built in [[Belgium]] by [[Fabrique Nationale Herstal]] (FN) in 13.2×99mm Hotchkiss
*{{flagicon|Sweden}} '''13,2&nbsp;mm automatkanon m/39''' ('''13,2&nbsp;mm akan m/39''') – Swedish designation for weapons produced in [[Belgium]] by [[Fabrique Nationale Herstal]] (FN) in 13.2×99mm Hotchkiss
*{{flagicon|Sweden}} '''13,2&nbsp;mm automatkanon m/39A''' ('''13,2&nbsp;mm akan m/39A''') – Swedish designation for weapons [[license produce]]d in [[Sweden]] by [[LM Ericsson]] in 13.2×99mm Hotchkiss
*{{flagicon|Sweden}} '''12,7&nbsp;mm automatkanon m/39''' ('''12,7&nbsp;mm akan m/39''') – Swedish designation for weapons produced in [[Belgium]] by [[FN Herstal]], re-chambered for [[12.7×99mm Browning]] ([[.50 BMG]])
*{{flagicon|Sweden}} '''12,7&nbsp;mm automatkanon m/39A''' ('''12,7&nbsp;mm akan m/39A''') – Swedish designation for weapons [[license produce]]d in [[Sweden]] by [[LM Ericsson]], re-chambered for [[12.7×99mm Browning]] ([[.50 BMG]])
*{{flagicon|Finland}} '''12,70&nbsp;mm LentoKoneKivääri m/42''' ('''12,70 LKk/42''') – Finnish designation for weapons [[Copyright infringement|pirate produced]] in [[Finland]] by [[Valtion Kivääritehdas]] (VKT) in [[12.7×99mm Browning]] ([[.50 BMG]])
== References ==
=== Footnotes ===
<references/>
=== Printed sources ===
*{{Cite book
|title=La mitrailleuse Browning FN
|publisher=Fabrique Nationale Herstal
|year=1939
|location=Belgium
|pages=24, 25
|language=French
|chapter=XII. Les munitions F.N. calibre 13,2&nbsp;mm
}}
*{{Cite book
|last=Brînzan
|first=Radu
|title=Vânător – Romanian Hunter, The I.A.R.80 and I.A.R.81 in Ultimate Detail
|publisher=Mushroom Model Publications
|year=2014
|isbn=9788363678401
|pages=285
|language=English
}}
*{{Cite book
|last1=Källqvist
|first1=Lennart
|title=Det bevingade verket, Svensk militär flygteknik och materiel under 50 år
|last2=Norrbohm
|first2=Gösta
|last3=Skogsberg
|first3=Bertil
|last4=Karlström
|first4=Björn
|publisher=Försvarets materielverk, Huvudavdelningen för flygmateriel
|others=Försvarets materielverk, Huvudavdelningen för flygmateriel
|year=1986
|isbn=9178105439
|location=Stockholm, Sweden
|pages=32
|language=Swedish
}}
*{{Cite book
|last1=Thunberg
|first1=L.
|title=Flygvapnets&nbsp;eldvapenammunition,&nbsp;fastställd&nbsp;1948
|last2=Björkstrand
|first2=N.
|publisher=Royal Swedish Air Force Materiel Administration & Victor Pettersons Bokindustriaktiebolag Stockholm
|year=1948
|edition=1949
|location=Stockholm, Sweden
|language=Swedish
}}
*{{Cite book
|last1=Söderberg
|first1=N.
|title=Beskrivning över 12,7&nbsp;mm akan m/39, 12,7&nbsp;mm akan m/45, 13,2&nbsp;mm akan m/39, 13,2&nbsp;mm akan m/39A, 1949 års upplaga
|last2=Björkstand
|first2=N.
|publisher=Royal Swedish Air Force Materiel Administration, Kungliga boktryckeriet, P. A. Norstedt & Söner
|year=1949
|edition=1955
|location=Stockholm, Sweden
|language=Swedish
}}
*{{Cite book
|last=Thorsson
|first=Nils
|title=Historik och kartläggning av vapenmateriel för flygplan
|year=1975
|location=Arboga, Sweden
|pages=0–14
}}
=== Web sources ===
*{{Cite web
|last=Fredriksson
|first=Urban
|date=2006-05-17
|title=Automatic cannon used by the Swedish air force
|url=http://www.x-plane.org/home/urf/aviation/text/sv_akan.html
|url-status=dead
|archive-url=https://web.archive.org/web/20191223015859/http://www.x-plane.org/home/urf/aviation/text/sv_akan.html
|archive-date=2019-12-23
|access-date=2021-11-18
|website=x-plane.org
}}
*{{Cite web
|title=FN 13.2mm production in 1940
|url=https://forum.cartridgecollectors.org/t/fn-13-2mm-production-in-1940/23331
|access-date=2021-11-18
|website=forum.cartridgecollectors.org
|date=7 December 2016
}}
*{{Cite web
|last=Ford
|first=Dan
|date=2014-05-01
|title=Browning machine gun?
|url=https://www.tapatalk.com/groups/warbirdsforum/browning-machine-gun-t1477.html
|url-status=live
|archive-url=https://web.archive.org/web/20180123131624/https://www.tapatalk.com/groups/warbirdsforum/browning-machine-gun-t1477.html
|archive-date=2018-01-23
|access-date=2021-11-18
|website=tapatalk.com
}}
*{{Cite web
|title=Ksp m/22 (Akan m/39)
|url=http://airwar.ru/weapon/guns/kspm22.html
|access-date=2021-11-18
|website=airwar.ru
}}
{{DEFAULTSORT:Mitrailleuse d'Avion Browning - F.N. Calibre 13,2 mm}}
[[Category:Aircraft guns]]
[[Category:Heavy machine guns]]
[[Category:FN Herstal firearms]]
[[Category:Machine guns of Belgium]]
[[Category:Military equipment introduced in the 1930s]]
[[Category:World War II machine guns]]