2A70

The 100 mm gun-launcher 2A70 (GRAU designation: ) is a model of low-pressure rifled cannons designed in the Soviet Union by the KBP Instrument Design Bureau. Integrated into Bakhcha-U and Sinitsa turret modules, the gun equips the BMD-4, BMP-3, and BTR-90M infantry fighting vehicles. It is capable of launching the high-explosive fragmentation (HE-FRAG) 3OF32 and 3OF70 projectiles, as well as the 9M117 Bastion gun-launched anti-tank guided missiles (ATGM) and related systems.

China produces a similar gun used on the ZBD-04 IFV, using technologies licensed from Russia in 1996. The VN20 has a version with a 100-mm gun.

History By no later than 2006, the then-standard projectile 3OF32 was found to be underpowered. Being modified from the WW2 52-OF-412 projectile of the 100 mm field gun M1944 (BS-3), it was designed to withstand a higher ballistic-performance gun and thus has too thick walls and insufficient explosive filling.Боекомплект Бмп-З

Ammunition + Table of ammunition2А70.00.000ТО. 100-мм орудие-пусковая установка. Техническое описание и инструкция по эксплуатации, стр.8 Cartridge Projectile Muzzle velocity (m/s) Mass (kg) Range (km) Area of destruction (m2) Penetration (mm RHA) HE-FRAG 3UOF17 3OF32 250 18.2 0.3–4.0 160 3UOF19 3OF70 355 15.8 0.3–6.5 360 3UOF19-1 3OF70 355 15.8 0.3–6.5 600 ATGM 3UBK10-3 9M117 Bastion 22 0.1–4.0 550 post-ERA 3UBK10М-3 9M117M Kan 22.9 0.1–4.0 ~600 post-ERA 3UBK23-3 9M117M1 Arkan 21.5 0.1—5.5 ~750 post-ERA

The 3OF32 has a point-detonating (impact) fuse.

Operators See the articles for BMP-3, BMD-4, and ZBD-04.

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