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Old July 30, 2010, 11:08 AM   #11
demigod
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Join Date: March 13, 2008
Location: AZ
Posts: 1,129
Quote:
The extractor gets hot like any other part, and with excessive heat ... it weakens. Some people try and fire their ARs like M-16s and they build up more heat than you could imagine.
The extractor should NOT be getting hot at all. Mike Pannene (sp?) wrote an article on the myths of DI gas sytem M4. One of the myths he sighted was that the bolt got hot during high round count firing.

He did a 2400 round test in six shooting sessions with an M4, and noted that even in the HOTTEST strings of fire, he could pull the bolt out and hold it in his bare fingers.
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