An official website of the United States government
A .mil website belongs to an official U.S. Department of Defense organization in the United States.
A lock (lock ) or https:// means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.

        

A U.S. Air Force Airmen adjusts the red dot sight on his M4 carbine rifle during combat arms training and maintenance.
A U.S. Air Force combat arms training and maintenance instructor gives instructions to Airmen.
A U.S. Air Force Airmen fires his M4 carbine weapon at practice targets during combat arms training and maintenance.
U.S. Air Force Airmen fire their M4 carbine rifles at practice targets during combat arms training and maintenance.
A U.S. Air Force Airmen fires an M4 carbine rifle at practice targets while wearing a gas mask during combat arms training and maintenance.
A U.S. Air Force Airmen loads a magazine for an M4 carbine rifle during combat arms training and maintenance.