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A407 100mm anti-tank gun M1977
Batalionul 612 artilerie antitanc 18.jpg
A407 gun of the 612th Anti-tank Battalion.
Type Anti-tank gun
Place of origin Romania
Service history
In service 1975-present
Production history
Manufacturer Arsenal Reşiţa
Weight 3,150 kg (6,940 lb)
Length 9.250 m
Barrel length 4.630 m
Width 2.250 m
Height 1.530 m
Crew 8

Caliber 100 millimetres (3.9 in)
Elevation −5°/+37°
Traverse 27°30' left and right
Rate of fire 7 to 15 rounds per minute
Muzzle velocity 900 m/s for HE
1400 m/s for APFSDS-T
Effective range 1.040 m for AP
1.728 m for APFSDS-T
Maximum range 20.600 m (HE)
4.000 m (AP)
3.000 m (HEAT)
Sights mechanical sight, panoramic sight,
optical sight, collimator

The A407 100mm anti-tank gun M1977 is a Romanian rifled 100-mm anti-tank gun which serves as the main towed anti-tank gun of the Romanian Land Forces from 1975 until present. Versions of the M1977 gun were installed on main battle tanks (TR-77 and TR-85) and ship turrets.


The A407 100mm anti-tank gun was the first artillery piece designed in Romania after World War II. The first variant of the gun, the M1975 (M stands for Model) had a semi-automatic horizontal sliding wedge type breech lock. The second variant, M1977, had a more practical vertical sliding wedge breech block.[1]

The M1977 can be also used as a field gun at brigade level, as it has a maximum range of 20.6 kilometers. After 1992, the M1977 anti-tank guns were modernized with improved optical sights.[2] The gun can be towed with the DAC 665T truck and has a maximum road speed of 60 km/h on road and 30 km/h off-road.


  • M1975 - used the horizontal sliding wedge breech lock.
  • M1977 - used the vertical sliding wedge breech lock.
  • M2002 - modernized version of M1977 with a FCS TAT-100.[3]


  • A 308 - tank gun used for TR-77 and TR-85 main battle tanks.
  • A 430 - 100 mm gun used for ship turrets.


  •  Romania - 208 M1977 towed anti-tank guns in 2010.[5]
  •  Israel - one was delivered in 1993.[6]

At least one A407 anti-tank gun was captured in Iraq during the Gulf War by the US Army. The exact number of A407 artillery pieces exported by Communist Romania is unknown. The gun is now the property of the Ohio Army National Guard, the transportation unit (1486th Transportation Company) that captured it.

See also


  1. Stroea A., page 146
  2. Stroea. A, page 148
  3. ROMARM description of M2002
  4. Stroea A., page 147
  5. IISS Military Balance 2010
  6. UN Disarmament
  • Foss, Christopher F. (2005). Jane's Armour and Artillery 2005-2006. Jane's Information Group. ISBN 978-0-7106-2686-8. 
  • Stroea, Adrian; Băjenaru, Gheorghe (2010) (in Romanian). Artileria română în date și imagini (Romanian artillery in data and images). Editura Centrului Tehnic-Editorial al Armatei. ISBN 978-606-524-080-3. 

External links


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