| A407 100mm anti-tank gun M1977 | |
| Origin: | Socialist Republic of Romania |
| Type: | Anti-tank gun |
| Is Artillery: | yes |
| Service: | 1975–present |
| Wars: | Gulf War |
| Manufacturer: | Arsenal Reşiţa |
| Weight: | 3150kg (6,950lb) |
| Length: | 9.250 m |
| Part Length: | 4.630 m |
| Width: | 2.250 m |
| Height: | 1.530 m |
| Crew: | 8 |
| Cartridge: | 100 x 695 mmR |
| Caliber: | 100mm |
| Rate: | 7 to 15 rounds per minute |
| Velocity: | 900 m/s for HE 1400 m/s for APFSDS-T |
| Range: | 1.040 m for AP 1.728 m for APFSDS-T |
| Max Range: | 20.600 m (HE) 4.000 m (AP) 3.000 m (HEAT) |
| Sights: | mechanical sight, panoramic sight, optical sight, collimator |
| Elevation: | −5°/+37° |
| Traverse: | 27°30' left and right |
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 on river monitors.
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.
Adaptations:[4]
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