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Notes on the Centenerian
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<blockquote data-quote="MudRunner2005" data-source="post: 1636131" data-attributes="member: 12995"><p>Actually, the first M60's had an adjustable gas block. The top brass found the adjustable gas piston system allowed it to run super fast opened all the way up, causing serious overgassing, overheating, barrel burning, carbon buildup, and malfunction issues. Soldiers testing them were opening up the gas and getting serious RPM's, and melting down barrels and causing other issues. They backed down the gas port diameter, and made it a non-adjustable self-regulating piston setup for that reason. Had nothing to do with the ammo. I used to work around a Colt M60 at the machine-gun range, the Master Sgt. (who has toted one in battle) that maintained it, taught me all about it.</p></blockquote><p></p>
[QUOTE="MudRunner2005, post: 1636131, member: 12995"] Actually, the first M60's had an adjustable gas block. The top brass found the adjustable gas piston system allowed it to run super fast opened all the way up, causing serious overgassing, overheating, barrel burning, carbon buildup, and malfunction issues. Soldiers testing them were opening up the gas and getting serious RPM's, and melting down barrels and causing other issues. They backed down the gas port diameter, and made it a non-adjustable self-regulating piston setup for that reason. Had nothing to do with the ammo. I used to work around a Colt M60 at the machine-gun range, the Master Sgt. (who has toted one in battle) that maintained it, taught me all about it. [/QUOTE]
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