Was Ruger Developing an AR-15 Automatic Rifle?
Updated: January 9th, 2013
A Ruger patent for a “Firearm Barrel Retaining System”, filed in 2009, was published by the USTPO yesterday. The patent application ( #20120017483) describes a quick change barrel system that includes an old school machine gun carry handle that help facilitate hot barrel changes.
I wonder if Ruger had planned to enter a quick barrel change variant of their SR-556 into the Marines IAR competition that was won by H&K.
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This would explain partially why their gas block is so ridiculously oversized.
@MArine: Actually, I know for a fact ALL M9s are built in America.. there's a plant that makes them, not too far from where I am sitting in South Carolina...