Of all of the concepts generated while I worked on F.E.A.R. 3, I am most proud of the weapons. (Well, those and the one mech I did). Here are a few examples of the standard weapons:
Beam rifle... um, shoots a beam.
This was an early attempt at a Flechette gun (later renamed the Penetrator). It shot out a high volume of pointy spikes in a buckshot manner. Real nasty when used up close.
This is the rework of the same gun, but done later in the project. I think there is a drastic difference in quality from some of the earlier guns to the later ones. The more weapons I concepted, the more comfortable I became at making them and ventured out into unknown territory. Here's an example of a fully realised concept. It shows the Penetrator in side, front and first person view. To add to the lore of the gun I fabricated a little blurb describing the guns purpose, ammo type and firing/ reload sequence.