Originally Posted by
Arctic1
Carbon buildup is not the only issue for mil guys.
Sand from weapons being exposed to the elements, dirt and vegetation getting into the action or getting on the mags in the pouches. Snow and ice getting into the action.
I had a guy whose weapon malfunctioned during a live fire ex, squad hasty attack. Bolt wouldn't cycle, and we couldn't lock the bolt to the rear. It was stuck, barely out of battery. With a leatherman and some brute force, we finally managed to get the bolt free.
Upon inspection of the barrel extension and inside the reciver, we saw small pebbles, the size of coarsly grated pepper. They locked the action up.
During one operation a team had several guns fail to function after a while, during contact; HK416's, MG-3's and M2 .50 cals due to mud and dirt getting EVERYWHERE.
Lubing helps, but only to a certain point.
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