Doug you have a type 12 on an M12V? The 3 later models have a collet nut, the M12V doesn’t. On it you screw the collet itself into the shaft so I think the shaft is internally threaded as opposed to the other 3 being externally threaded (I’m not home so I can check). I’m fairly certain that the M12V has the same collet as an older Makita, maybe a 3604. Harry would probably recognize it. The newer 3 have the same collet as a Bosch 1617 (plus a bunch of DWs). I gave my son a 1617 and I’ve interchanged the collet on it with my V2 and VC.
Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.