What does the "D" in RPG-7D stand for?

The "D" in RPG-7D stands for "Desantnii," which is a Russian term meaning "airborne" or "paratrooper." This indicates that the RPG-7D variant is specifically designed for use by airborne troops, making it suitable for deployment in a variety of combat situations where quick mobility and effectiveness in anti-tank roles are crucial. The RPG-7 itself is a shoulder-fired, anti-tank weapon, and the designation of "Desantnii" signifies its tailored design for units that require lightweight and easily transportable weaponry that can be used in conjunction with airborne or light infantry operations. This contextual understanding highlights the importance of the weapon's designation in relation to its intended operational use.