The CN120-25, also simply referred to as Modèle G1 (G1 model) is a French smoothbore 120mm tank gun of 52 calibers designed by the EFAB of Bourges for the export market.

CN120-25
Typesmoothbore tank gun
Place of originFrance
Production history
DesignerEFAB of Bourges
Designed1979
ManufacturerGiat Industries
Specifications
Mass2450 kg
Length7,154 m (23,471 ft 2 in)
Barrel length6.2 m (20 ft 4 in) or 52 calibers

Shell120×570mm NATO
Calibre120 mm (2.95 in)
Actionsemi-automatic vertical sliding-wedge breech
Recoil485 mm
Elevation-8° to +20°
Traverse360°
Muzzle velocity1650 m/s (APFSDS)
SightsM581 (AMX-40) or VS 580-19 (EE-T2 Osório)

Description

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The Brazilian EE-T2 after a shot.

Designed by the Établissement d'Études et de Fabrication d'Armements de Bourges (EFAB), the G1 120 mm smoothbore gun has been designed to be interchangeable with the rifled 105 mm CN 105 F1 tank gun. The G1 uses semi-combustible propellant cases and has been designed to fire both French-produced ammunition and German Rheinmetall-produced ammunition.[1] A vertical sliding breech-block is used, the barrel is chrome-plated and autofrettaged.

The 120 mm smooth-bore gun G1 has been fitted to the private venture Giat Industries AMX-32,[2] AMX-40 and the Brazilian ENGESA EE-T2 Osório main battle tanks, neither of which entered production. This weapon was previously referred to as the CN120-24 gun.

Additional specifications

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  • Maximum service chamber pressure: 630 MPa (91,000 psi)[1]
  • Recoil effort at trunnions: 365 kN (APFSDS fired at +51 °C)
  • Overall weight: 2450 kg
  • Recoiling gun mass: 1830 kg

See also

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Weapons of comparable role, performance and era

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References

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  1. ^ a b Foss, Christopher (1993). Jane's Armoured Fighting Vehicle Retrofit Systems 1993-94. London: Jane's Information Group. p. 33. ISBN 978-0710610799.
  2. ^ CHASSILLAN, Marc (2008). LE CHAR FRANÇAIS AMX 40. Raids. pp. 52–59.