Source: Ministry of Defense of Ukraine
Of all the anti-tank weapons currently in use in the world, only one can claim to be the most widely deployed. That weapon is the RPG-7. Standing for Ruchnoy Protivotankovy Granatomyot, meaning Hand-Held Antitank Grenade Launcher, the RPG-7 can be found in the arsenals of some 40 countries and in the hands of irregular forces, militants, and private military contractors (PMCs). It is believed well over 9 million RPG-7 weapons (of all types and variants) have been built. None of the successors to the RPG-7 have come close to its production numbers and so on military arms markets, there are plenty of RPG-7 models to be had as well as large stockpiles of rocket ammunition. As such, for countries aiding Ukraine militarily, supplying the RPG-7 and ammunition is inexpensive and requires little training by Ukrainian soldiers as many of them are already familiar with the weapon. The RPG-7 is the successor to the RPG-2, the latter first entering service in 1954 and the RPG-7 appearing in the hands of Soviet soldiers starting in 1961.
The RPG-7 shown here in the hands of a soldier belonging to the 25th. Airborne Brigade “Sicheslav” has a weight of 14 pounds (unloaded) and a length of 3.1 feet without the rocket. The RPG-7 is primarily made of steel while the back portion of the launcher has wooden furniture added to protect the firer's shoulder from the heat generated in the launch tube by the rocket upon firing. Typically, the RPG-7 is equipped with a PGO-7 optical sight (with 2.7x magnification) but here, the soldier is using only the iron sights. Using the iron sights, which have no adjustment for wind or target lead, means the effective range is limited to between 200 meters to at most 500 meters.
The RPG-7 is not a single-shot weapon and can be reloaded. While some early anti-tank weapons were electrically fired (using batteries as the power source), the RPG-7 uses a primer system. This eliminates the need for batteries and thus there is no risk of running out of power, rendering the weapon useless. As such, directly behind the front grip/trigger assembly is a single-action hammer which, when the firer pulls the trigger, releases the hammer to strike upwards onto the firing pin which then sets off the primer contained in the rocket.
Speaking of rockets, the one seen in use here is a 70mm PUI-7 practice rocket which provides a much reduced training cost in comparison to using combat munitions. The PUI-7 has no warhead and it also does not have the rocket motor and so the nozzles, seen forward of the front sight, are closed off. It does, however, have the booster charge attached to the rear of the rocket. It is this charge that propels the rocket out of the launch tube. In a combat munition, once the rocket reaches around 5 meters distance from the launcher, the rocket motor would take over and propel the warhead towards the target and, in some cases, impart stabilizing spin while in flight. The latter occurs if the rocket doesn't utilize pop-out stabilizing fins.
Within the PUI-7's booster charge is a 7.62x39mm tracer rifle cartridge and primer and the PUI-7 also comes with a safety cap on the tip of the warhead. On a combat RPG-7 rocket, this cap protects the impact fuze from accidental detonation. With the PUI-7 rocket, the cap is still used despite having no fuze in order to train the operator in proper procedures for readying the rocket for use. The firing process is exactly the same as with any other rocket and upon pulling the trigger, the firing pin strikes the primer and launches the PUI-7 down range. The tracer element assists in watching the flight of the rocket and the maximum range is 400 meters.
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