Default level 1 gun, before you are infused with Traveler magic. This is part of the first campaign mission.

...or it's possible that the gun is a pre-golden age relic. Which, if it is, would be awesome because it would add a lot to the lore of the game by seeing the history of humanity through it's weapons. Also, it means that not all assault rifles look like the standard model we've seen so far, which was getting me worried Although, I will admit that the rest of the video seems suspicious. The HUD seems to be different and I don't see why it would prompt to melee. But it definitely was from the video on his channel.

An ar 15 platform isnt from cod its a well known gun if you were a warrior durimg the collapse you would probably have one

[spoiler] grenades have to be unlocked[/spoiler]

Read what I said. I said you started out with grenades in the alpha cause you were a level 3. In the BETA you start as level 1 with no upgrades. Why are you such a duck?

No, its real. I've seen the whole clip on Upload.