Just no.

I edited my post. Tell me your ideas on how they would work. As long as they are not invunerable I might be open to the idea.

I just wanted to say Blacklight have them, so Ghost Recon and so Halo 4.
Shields work in sci-fi FPS: are fun ad add a layer of new tactical possibilities.

I'd say they use the main weapon slot. Only a sidearm for shield carriers.

That's because video game designers aren't materials engineers, don't know how guns actually work, and know that most of their consumers don't know kitten about either.
http://www.youtube.com/watch?v=NDSG0I8TFdk

Oh blob... someone using "realism" as an excuse to deny a great idea. We aren't using regular projectile weapons, for the most part, and it doesn't have to be an actual riot shield, just something analogous to one.

I Propose a PLASMA SHIELD: A handheld device that releases plasma, and uses a strong electromagnetic field to mold the plasma into the form of a shield. Plasma is known to react to electromagnetic fields. It would destroy many regular projectiles coming through, and would have some sort ionizing particle shield to counter the charged particles of incoming plasma rounds. It would NOT be a perfect shield; would only stop like 60% of incoming damage, and would have limited HP (meaning it will eventually be destroyed).


+1 to the OP

I was thinking of something similar. Rather than a physcal shield why not have a module that could " expand on the suit natural shield crrating a temporary shield made from expanding your own" it would work like a riot shield that stays up for 4 or 5 second beforing going down.

, maybe a physical shield could have charges, like real life REACTIVE ARMOR. So each time it is hit, a focused explosion of energy fires to counteract the incoming damage and uses up one charge. eg. 12 charges/hits and it is used up, then needs to be "re-loaded" or is used up/consumed.