Very interesting, as you don’t often get to see one that close. This, as every time it seems that one’s found in a cache, etc., they just blow them all up without taking any detailed photos.
The nose sensor you show, presumed piezoelectric-based, wouldn’t be for the Russian PG-7 projectile assembly by the way (it's not PG-7V, see later text), it would be for the Chinese model. Due to its shape, it's likely for the Type 69-I (Type 69-1) and not the Type 69. As far as I’m aware, the Chinese Type 69 is a straight clone of the PG-7, and as such it would use a clone of the VP-7 fuzing system (see later text). In comparison to the Type 69, the Type 69-I uses a modified fuzing system, which is referred to in some US documentation as the MD2. As I can’t read the Chinese text of the fuze, I don’t know its Chinese designation.
As you said you don’t know much about RPGs, here’s a little bit of help.
Right, just to start with, there’s no PG-7V (ПГ-7В) HEAT rocket (see PS). Firstly as that’s the designation of the complete round of ammunition. Secondly as it’s a round for the RPG-7 recoilless gun, a round that has a rocket-boosted projectile that is first fired from the RPG-7 gun (launcher) using a propulsion or expelling propellant charge that operates on the recoilless gun principle. The RPG-7 doesn’t fire rockets, it fires either rocket-boosted projectiles, or just projectiles (i.e. the OG-7V (ОГ-7В) round and its OG-7 (ОГ-7) projectile.
Right, the PG-7V is made up of the PG-7 (ПГ-7) grenade (projectile assembly) and the PG-7P (ПГ-7П) propulsion charge and stabiliser assembly. The PG-7 is made up of the VP-7 (ВП-7) fuzing system, the PG-7G (ПГ-7Г) warhead, and the PG-7D (ПГ-7Д) rocket motor. It’s the only one of the RPG-7 projectiles that has separate codes for its warhead and rocket motor assemblies. This has led to some calling the PG-7G an entirely different round/projectile (US DoD included). The VP-7 fuzing system is made up of the VP-7GSh (ВП-7ГЧ) piezoelectric nose sensor and the VP-7DCh (ВП–7ДЧ) base element (safe and arm device, aka SAD, which is called a PIM [ПИМ] in Russian).
For note, the RPG acronym-part of RPG-7 (also RPG-1, RPG-2, RPG-4, RPG-16, RPG-29, and RPG-32) does not mean ‘rocket propelled grenade’, it means ‘hand-held anti-tank grenade launcher’. Even with the other Russian RPG-designated weapons (i.e. RPG-18, RPG-22, RPG-26, RPG-27, RPG-28, and RPG-30) that only fire projectiles that are powered by a rocket motor in-bore (so really rockets in this case), the designation RPG doesn’t mean ‘Rocket Propelled Grenade’, it actually means ‘Reactive (i.e. Rocket) Anti-Tank Grenade. The term ‘Rocket Propelled Grenade’ is simply a Western misnomer.
PS I’m going to get stick for this, but I classify ammunition by the type of weapon that fires it, so its projection method. As such I don’t classify the RPG-7’s recoilless gun principle-fired rocket-boosted ammunition, or any other rocket-boosted ammunition that is not rocket-propelled within the bore, as a rocket. I classify these as rocket-assisted projectiles (RAP).
