[damage]

In addition the only difference from the first and second is on the second batch the lower reciever where you should do modification to make a clearance for the hop up unit is already been machined. MadMaxx had that image somewhere where you do that. So if anyone is thinking of getting a New Gen M4 metal reciever make sure to look at that part first. If it is already machined thats the latest version if not thats the first bitch version. Peace!