Primal:Khaos Pulse Rifle
There's quite a few of these designs that I'm really keen to develop. This one I was really happy with. It's based on the gun in the middle on the right, which apparently is an F2000 Assault Rifle. Honestly, as cool as they look, I'm glad my versions are fictional.
I had this gun in mind as a weapon for the Rhino-based aliens I designed a while back, who are going to be known as the Boarock from now on. They're a pretty armour-plated race, so I added plates to the F2000, and bulked it up. The Boarock are not a subtle people.
Rob put together a great 3D model of this, and...yeah. This is not something you want to mess with.