well its a good idea like one said here have different body armor but like having something that can protect you from pistol round one for 223. and one for the 308. but you will get like 2x shot were nothing happens only you get like shook up unsteady aim 3 hit will knock you off and will give you slow movement after that its broken you can make it so its like ceramic plates so its not repairable. helmets can only take one shot sins its hard to hit the head to begin with from most e calibers not the 308 or stronger . make it so you have to find the ceramic plates and the vest to holde it and you have different types of ceramic plates you can loot.