
It looks to be a flare gun...? Possible a napalm launcher?
I suppose Steam feel it is going to be popular if they replace the shotgun for it in one of their video's.
Hopefully instead of an 'Upgrade' the new weapon slots would be viable exchanges, where you would have to make a tough decision between the two, unlike say the Blutslaughter as the +3 hp when you hit means that it all too commonly replaces the needlegun.

its real, I mean why would they show you a new wep just to tell you its not real?

but i wonder if they'll try to work it back in. seems kinda pointless but i do wish they'd update their game trailer