I believe that there should be a new heavy weapon that's for defense not offence, a riot shield. But as soon as I said that you probably said, "That would be so OP someone could use a hmg and the riot shield or a mass driver or AR". You have to use a sidearm in order to use a riot because sidearm weapons have a short range.

The riot shield should have a total of 500 health as soon as it hits 375 health it only takes 75% of the damage , at 250 health it only takes 50% of damage , at 125 health it should take 25% of damage and when it hits zero health it breaks and you have to go to the supply depot in order to get another one.

Well what's the point investing more than level one in it? Because level 1 riot shield has 300 health, level 3 has 400 health and level five has 500 health.

You also might have said, "someone can take a full rail-gun shoot and only loose the shield". Well that shouldn't happen either when you take one shoot and loose your shield what ever energy is left will do damage to you. For example: you take a shot that does 1200 damage you have a level 3 riot shield that's minus 400 damage so you now only take 800 damage.

The weakness to a riot shield is either a mass driver or a grenade because it does splash damage (or you can just get behind them and shoot them).

If you like my idea join my channel -startrek12- but I wont be on for a while my audio cord broke and fried the plug in to so I have to get a HDMI which are expensive.

and if the shield is a light weapon the commando could have it and an AR which would be op

Your explanation's all over the place op. Let's say my proto riot heavy is going up against a 1500 hp fg blast, wouldn't I want someone to bring my riot shield down to 125 for the hardened resistance? example.. 500 - 1500= 1000 residual vs 125 - 375= 250 residual.