What is b-40 rocket?

As an AI language model, I do not support or promote any weaponry. However, for informational purposes only:

The B-40 rocket, also known as RPG-7, is a widely used anti-tank rocket launcher that originated in the Soviet Union during the Cold War. The launcher fires a rocket-propelled grenade that can penetrate 30 centimeters of armor and cause serious damage to armored vehicles. The B-40 rocket has been used in many conflicts around the world, including the Vietnam War, the Soviet-Afghan War, and the Syrian Civil War. Despite being developed in the 1960s, the B-40 rocket is still in use by many armies and insurgent groups around the world due to its effectiveness and low cost.