Overview of 120 mm rapid-fire self-propelled guns Phlox of Russia. Russia may start using the new 2S40 Phlox rapid-fire self-propelled guns. The 2S40 Floks 120-mm self-propelled artillery gun is mounted on the Ural-4320VV chassis and was first shown in 2016. The self-propelled gun is equipped with a gun developed on the basis of 2A80 from self-propelled guns 2S31 "Vena", this gun combines the main qualities of guns, howitzers and mortars, which allows the use of various ammunition, including foreign production. The gun is equipped with a modern recoil system. This solution, together with modern electronics, can reduce the time to fire to 20 seconds. The self-propelled guns weighing 20 tons are armored and protect the crew from bullets and an explosion of up to 5 kg of TNT. ACS "Floks" is equipped with a modern digital weapon-computer system, which is able to perform many tasks in automatic mode. Real-time information is sent to the crew monitors in the cockpit, which allows you to quickly respond to the situation. ACS can exchange data with other machines and store up to 30 targets in memory at the same time, working on them one by one. The 2S40 gun is the fastest firing in the world in its caliber, the rate of fire of the Phlox self-propelled guns reaches 10 rounds per minute. There are 28 shells in the automated ammunition rack of the self-propelled guns and 52 are in conventional stacks. The ACS is equipped with a system for detecting laser irradiation and setting smoke screens. The installation is equipped with a remotely controlled combat module with a Kord machine gun of 12.7 mm caliber. The firing range of the self-propelled guns is up to 13 km, the crew of the vehicle is 4 people.