title: Atelier de Construction de Puteaux
text: # Atelier de Construction de Puteaux
  
  The Atelier de Construction de Puteaux (APX) (English translation: "Puteaux Construction Workshops") was a state arsenal belonging to the French Army. It was located at 8, quai national in Puteaux.
  
  ## History
  
  Atelier de Construction de Puteaux was in charge of making ammunition and carrying out tests. The factories also produced small and medium-sized equipment (firearms and knives), while the so-called “manufacturing” workshops produced larger equipment (artillery pieces).
  
  Atelier de Construction de Puteaux disappeared after the Second World War, being transferred to Satory and merged with Ateliers de construction d'Issy-les-Moulineaux (AMX), which specialized in the construction of tanks and other armored vehicles.
  
  Atelier de Construction de Puteaux had two responsibilities:
  
  To design new weapons for the French Army. It specialized in small arms and medium caliber weapons and their accessories: such as machine guns, cannon, tank turrets, Telescopic sights for rifles, missiles etc.
  
  And for serial production of those weapons, alone or concurrently with other factories.
  
  ## Atelier de Construction de Puteaux achievements
  
  ### Arms
  
  * 1888 : prototype of Berthier rifle.
  * 1905 : Puteaux modèle 1905 machine gun. Only a few hundred copies were made because of its many defects. It was simplified and mass produced by the Manufacture d'armes de Saint-Étienne (MAS) as the St. Étienne Mle 1907 and used in the two world wars.
  * 1915 : prototype of the Fusil Mitrailleur Modele 1915 CSRG, better known as "Chauchat".
  * 1918 : 37 mm semi-automatic cannon model 1918 (37 mm SA 18) for light tanks.
  * 1935 : 25 mm APX modèle 1937, shortened version of the light 25 mm Hotchkiss anti-tank gun.
  * 1938 : 75mm high-velocity APX gun for the ARL V 39, modified from the 75mm 1929 casemate fortress gun.
  * 1969 : Rapid anti-tank weapon (ACRA).
  
  ### Weapon accessories
  
  * 1957 : firing scope of the MAS-49 rifle.
  
  ### Tank turret
  
  * 1934 : APX 3B turret fitted on the Panhard 178.
  * 1935 : APX 5 turret mounted on the AMR 35 ZT 2 and Gendron-Somua AMR 39.
  * 1936 : APX standard turret fitted on the prototype of the Hotchkiss H35, prototype of the Renault R35 and the FCM 36.
  * 1938 : APX-R turret fitted on the H39 variant of the Hotchkiss H35, the Renault R35 and the Renault R40. A APX-R tank turret was planned to be mounted on the AMX 38.
  