[Reddy]

I was looking at the classic 177.

Still, this doesn’t look like the black rifle in the op.

[Theoria]

Yeah, dunno. I just posted a pic from Crosman of the model. I don't know the color and such. I looked at the video you posted and the witness said a AR-15.

Dunno why any moron would take a air rifle out of the box and run around with it in Wal Mart. But, anything can and will happen there.