Attached is an article from May 2021 issue of Leatherneck Magazine explaining the new course of fire.
And a video from Military Times explaining and showing some of the changes;
Finally for the history buffs from American Rifleman magazine Jan 2021 The Beginnings of Marine Corps Marksmanship
And a video from Military Times explaining and showing some of the changes;
Finally for the history buffs from American Rifleman magazine Jan 2021 The Beginnings of Marine Corps Marksmanship