Anyway, it is in fact a Czech RPG-7 subcaliber training device, that fires the 7.62x39 Soviet round. Much cheaper and safer to use in training that sending rockets downrange. The only downside to it is you do have something of a counter-training effect on backblast awareness. But that goes away after your first mistake.
The Arsenal of Argghhh! has an RPG-7 (the first version, iron sights only) in our holdings. It's a demil launcher, meaning the bore is blocked and a hole was cut into the blast tube. I am seriously considering applying to the ATFE to "re-activate" the weapon and get it papered as a DD, which is Class III shorthand for "destructive device." They're legal here in Kansas, as long as they're federally papered. I probably won't bother with messing with the hole in the tube, it's covered by the heat shield and would be unaffected by the sub-caliber trainer.
I just want to be able to get the trainer fully seated into the bore (which won't happen now because of where the rod welded into the bore is located) and the firing pin replaced. It might be possible to modify so I wouldn't have to pay the $200 tax and such, but rest assured, we'll have a letter from ATFE saying so and approving a design before we even think about getting bendy like that.
That might even be fun to eventually take to the public range over in Missouri, just to watch the guys who run the range (state-run range, and a darn good one, too) get a little bendy themselves when I put the RPG up on my shoulder... they're PC enough at that range (which, I reiterate, is a damn fine range and well run) that there's no using human silhouette targets, nor will there be any extended bayonets on rifles with folding bayonets on them. Sends the wrong message. I won't argue with it - they want to keep their range open, and not give anti's any excuse to attack the range.
So, here's an overall view:

Those bolts that caused all the consternation? They essentially establish the boresight - and you're correct, you aren't supposed to mess with them. Armorers only.
And here's a view of the bolt, sitting in the receiver.

And here is the video Frank was trying to post for you.
There will be more pictures next week. Gotta give ya a reason to keep coming, right?
Oh, and Argent - you were correct... it *is* a material delivery device.



Would that be Lake City, John? That is a very good one, and you're right, a little strict about things on the line (3-5 secs between shots, etc). But they kind of have to be strict, I've seen some people out there that I felt should have been warned a little more sternly about safety issues, if not more.
Need to find me a place outside of town where I can just set up empty cans and plink all day. Seeing a 45acp throw a can into the air is infinitely more enjoyable holes in a sheet of paper.
"more enjoying than simply putting holes in a sheet of paper."
Oh, and their trap range is great there, too.
Preferably something that's a teeeeeny bit less obscure.
And I'm thinking if I had started off with the shot of the bolt-face, this would have gone a much different direction.
And yes, Argent (the guy in Australia) has been a good student of Whatziss presentation.
The funny thing is, with Argent, half the time he has no idea what is is, either.
In other news, how do I get my hand on one of those practice RPG thingies?
The best whatsis are the ones that show you a piece or a segment of something so common you cannot help but to know it intimately,
Okay, fine.
Then you leap off into: How many people would recognize a Kettenkrad from a picture of the engine?
Snerk. How many people (when generalizing) know what a Kettenkrad is? Hmmmm.... Nah, now that we've put it out here, they'll snap to tracked motorcyle way too fast.