It's an AR15 with a HERA CQR stock , looks kinda strange and stupid (it is) .
This type of stocks are nearly never preferred except in California as they can modify the stock a bit and make it California compliant.
Now the chances of a sane person putting on a costly HERA CQR stock on a gun when he has better options is grim , maybe 3d printed from a file (they exist) or some local clone .
But the clone is pretty exact.
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What's stranger is that he is using an Aimpoint Pro (appears to be genuine) , who tf is funding them , for them to buy a 500 usd optic that too in blackmarket.