Help IDing a Bazooka Round

[landsknechte]

I found this bazooka round at a flea market a number of years ago.  (Don't worry, it's deactivated.)

I can't see any remnants of the original paint, other than the black stripe which may or may not be original.  I had assumed that it had been monkeyed with over the years, with the weird screws in the shaft.  This morning I found a couple of photos online of other similar rounds.  Anyhow, is anyone able to glean anything about this round?  Was it a training round?  HE?  Something else?  Any indication of the model / age?  What did those screws do anyhow?