The K9 Thunder is a South Korean 155 mm self-propelled howitzer designed and developed by the Agency for Defense Development and private corporations including Dongmyeong Heavy Industries, Kia Heavy Industry, Poongsan Corporation, and Samsung Aerospace Industries for the Republic of Korea Armed Forces, and is now manufactured by Hanwha Aerospace. K9 howitzers operate in groups with the K10 Ammunition Resupply Vehicle variant.
K9 Thunder
Turkish variant T-155 Fırtına
AHS Krab at Arms and Security 2017 exhibition
The K9 battery is maneuvering during training
155 mm is a NATO-standard artillery shell caliber that is used in many field guns, howitzers, and gun-howitzers. It is defined in AOP-29 part 1 with reference to STANAG 4425.
M107, M795, M483A1 155 mm projectiles
M107 projectile 155 mm projectile being loaded into an M777 howitzer