It's a joke, The QJB/S 201 Is lightweight and features very high RPM yet the recoil is so impressive you'd think it would feature a counter mass system with some form of propellant gas of the rear weapon creating a forward thrust as soon it fires almost eliminating all off the heavy and bulky recoil of a conventional cannon.That's a nice clip, and I wonder what kind of optic they have on top of it.
It's not common to see an optic on top, and the profile doesn't look like the standard optic used for it, it almost resembles the profile of QMK171.
Also, the prefix designation should be QJB rather than QJS, I believe.
QJB-201 is a bit too overbuilt and heavy beyond the LSW/SAW role. I'm not sure what "recoil less rifle" means.