It was a BB gun. Here's a video from the other cop's perspective
https://www.youtube.com/watch?v=0V9AOsWQzpc
I'm not embedding until a mod weighs in. Technically, we're watching a guy die on YouTube.
Here's the article:
Video: Texas cops fatally shoot man who pulled replica
Cops very well-trained. Notice how he moves the cutlery while walking out, and watches the perp walk past. All happens very fast once outside.
If you're going to bring a BB gun to a gunfight, make it a Daisy Red Ryder. At least it looks like a BB gun which will increase your chances of only getting tasered/maced/curb-stomped/all of the above.