-all m4s are being found from dead bodies
    -its always the same worn green magpul handguard m4 or with no handguard at
   all (noone has seen a regular m4 handgaurd this patch)
    -noone ever posted a heli m4 finding
    -noone found an AK101. its not there, just like the M4 isnt spawning at  
    helis anymore.
    -THE BIG ONE: noone has an M4 on private hives.
    -server owners I know restarted their servers a million times and found   
    neither magpul handguard nor m4. you can ask anyone about this, there is a  
    a lot of people who do this, they will all say the same.
    -no m4s on private hives because noone is there to dupe it
    -I have talked to people that sell gear, they claim the m4 spawned 
    only in a brief time period during the release and a minipatch removed it. 
    They found it in this period and are duping and selling it since then. This 
     might be a lie but seems the most plausible explanation to me.

    It also checks out with all M4s being identical.