AA-52 machine gun

Infobox Weapon|is_ranged=yes


caption=
name=AA-52
type=Machine gun
origin=flagcountry|France
era=
platform=Individual
target=Personnel
design_date=1952
production_date=
service=1952-2008(france)
used_by=See Users
wars=Indochina, Gulf War 1, Bosnia
spec_type=machine gun
caliber=
part_length=600 mm
cartridge=7.5x54mm French
feed=Belt
action=Lever-delayed blowback
rate=900 round/min
velocity=830 m/s
weight=9.75 kg
length=1080 mm
variants= NF-1
number=

The "AA-52" ("Arme Automatique Transformable Modèle 1952", "Transformable automatic weapon model 1952") is one of the first French-produced guns of the post World War II era. It was manufactured by MAS (an abbreviation of Manufacture d'Armes St. Etienne - one of several government-owned arms factories in France)The AA-52 is still used today as a vehicle-mounted weapon due to large quantities in service, but has been replaced by the Belgian FN MAG for helicopter use, starting with the EC 725 Caracal of the Special Operations units and the Air Force Search and Rescue teams. The AA-52 had been phased out for infantry use in favour of the lighter FN MINIMI for a few years; the replacement of the AA-52 by the FN MAG as the standard infantry GPMG is now taking place (in 2008).

History

The AA-52 machine gun was conceived and developed following the French military's experiences in Indochina during the early 1950s. At that time, the French army was equipped with an assortment of weapons from British and American sources, as well as some German weapons from the Second World War.

Effective supply of ammunition and replacement parts was an almost insoluble task and the army decided to adopt a standard machine gun. The result was the AA-52, conceived for easy production. The construction was of simple welded stamped sheet steel.

Overview

The AA-52 is a peculiar weapon among modern machine guns by its blowback system of operation. The AA-52 uses Lever-delayed blowback.When firing, the pressure pushing the case head rearward initiates an impulse on a cam that sends the bolt carrier rearward. After a certain distance, a link (in this case the firing pin) pulls the bolt head, hence extracting the spent case. Since there is no primary extraction, the chamber is fluted to allow powder gases to flow back, unsticking the case from the wall chamber like on H&K type Roller-delayed blowback weapons.

The AA-52 can be used as a LMG with a bipod or HMG with a tripod. When used with a tripod for continuous fire, the gun is fitted with a heavier barrel. In the LMG configuration, the AA-52 is a relatively light weapon to carry. To change the barrel, it is simply necessary to press a latch and rotate 1/4 turn.

Variants

NF-1

The AA-52 was conceived originally to use 7.5 mm cartridges that were used in the French FM-24/29. The general adoption of the 7.62x51mm NATO cartridge reduced the opportunity for export sales, and the gun was adapted for the 7.62 mm calibre.

12,7mm version

A version in .50 BMG has been designed. A few prototypes were tested and one retained for preserial production, but it never reached production due to the large quantity of US Browning machine guns in service with the French armed forces.

Users

*flagcountry|France
*flagcountry|Djbouti
*flagcountry|Guyana

References

* [http://www.gunsworld.com/french/aa52_us.htm Gun's World AA-52]
* [http://www.imagestation.com/album/index.html?id=2098197860 AA-52 pictures]
* [http://world.guns.ru/machine/mg09-e.htm AAT Mod.52 / Mod. F1] at Modern Firearms.ru