The SPG-9 Kopyo (Spear) (Russian: СПГ-9 Копьё) is a tripod-mounted man-portable, 73 millimetre calibre recoilless gun developed by the Soviet Union. It fires fin-stabilised, rocket-assisted high explosive (HE) and high-explosive anti-tank (HEAT) shaped charge projectiles similar to those fired by the 73 mm 2A28 Grom low pressure gun of the BMP-1 armored vehicle. It was accepted into service in 1962, replacing the B-10 recoilless rifle.
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The projectile is launched from the gun by a small charge, which gives it an initial velocity of between 250–400 metres per second (820–1,310 ft/s). The launch charge also imparts spin to the projectile by a series of offset holes. Once the projectile has traveled approximately 20 metres (66 ft) from the launcher, a rocket motor in its base ignites. For the PG-9 projectile, this takes it to a velocity of 700 metres per second (2,300 ft/s) before the motor burns out.
The SPG-9 is heavy, ~60 kilograms (130 lb), and normally transported by vehicle, and carried into position by its two crew. It can be deployed in about a minute. The weapon is in service with a large number of armed forces, and a variety of ammunition is produced; however, they are mostly copies of the original Soviet PG-9 HEAT and OG-9 fragmentation (FRAG) high explosive (FRAG-HE) rounds.
The SPG-9 is widely available to terrorists and maritime pirates such as in the Horn of Africa region, and in other regions to a lesser degree. It is not as popular as the RPG-7 because it must be mounted on a vehicle or boat and cannot be easily carried and shoulder fired. The SPG-9 requires much more skill to fire accurately than the RPG-7. There have been reports of these mounted in skiffs and larger "mother ships". The SPG-9 can typically be found mounted on a wide variety of vehicles known as "technicals" in Somalia.
A variant for use with airborne troops including detachable wheels was built as the SPG-9D.
The SPG-9 was used by both sides during the Transnistria War, 
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- Afghanistan 
- People's Republic of Bulgaria
/ Bulgaria : manufactured locally as Arsenal ATGL
- Central African Republic
- Democratic Republic of the Congo
- Iran: AMIG SPG-9
- Socialist Republic of Romania / Romania: RomArm AG-9
- South Sudan
- Ukraine, also used by separatist forces
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- Media related to SPG-9 at Wikimedia Commons