So I have a question about the M4 that I’m hoping someone with real world weapon knowledge, who does the M4 have or not use a charging handle or whatever it’s called, but not use it once it does a full reload from empty? Is it just a COD thing that they push a button instead of using the handle? Or to distinguish it from the M16’s reload in case someone somehow gets confused? I don’t have really any real world knowledge on guns.