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So Ukraine received some interesting surplus armaments from Poland a few weeks back, the RPG-76 'Komar' (Mosquito)
An obscure rocket launcher, Poland being the only user, and unlike most other weapons of its kind. Rather than working as a recoilless rifle and venting blast out back through a venturi, the rocket instead has jets jutting out the sides in four positions and pointing backwards at an angle, starting at a relatively low pressure and then building up as it travels (so as reduce initial blasting).
To use it, you unfold its stock, shoulder it, one hand around the front of the stock, another on the rear of the body of the launcher. Then you take aim use the electric trigger which is unveiled when the stock is unfolded, there's a not insignificant blast to your sides, but as long as nobody is standing right next to you (and you grip it properly), you're good.
Not venting out back is what allows it to have something like a stock as you'd see on a subgun, meaning you can fold this rocket launcher up and have a very short and convenient package easy to store and carry. As it is a single use launcher made out of aluminum, it can be made thin and light as it only has to safely sustain one firing, so it's 4lbs while still loaded.
Poland had actually retired these launchers from front-line use in the early 2000s as the light warhead wasn't able to defeat modern tanks, but as they sent units to Iraq and Afghanistan, these things were brought out again, and it was realized that there's quite a lot of other things to blow up on the battlefield which aren't big bad tanks, such as lighter armored vehicles or fortifications (and the lack of direct backblast made it friendly to fire out of windows and out of vehicles, as long as you clear the 'muzzle' end).
This thing looks awkward and like not much to the world at first glance, but learning about it, I came away very impressed. It's remarkably compact for its class.