Dec 7, 2012

Lance Cpl. Chin Wanfeng, a rifleman serving with 3rd Battalion Singapore Guards, exchanges weapons with Lance Cpl. Christopher Elk, a rifleman serving with 2nd Battalion, 5th Marine Regiment, to examine the differences in sensitivity of trigger mechanisms here, Dec. 1 during Exercise Valiant Mark 2012. Wanfeng said the M16A4 service rifle has a softer trigger-pull than his Mark 3 general purpose machine gun. (Official United States Marine Corps photo by Lance Cpl. Corey Dabney.)

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1st Marine Division