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Message: <blockquote data-quote="uncle money bags" data-source="post: 2165962" data-attributes="member: 8377">well sir, that is about all I got diagnosing over the interweb!without shooting it I am at a loss, except for possibly the buffer weight and maybe the ammo, although xm193 should run like a raped ape in that gun. I have heard anecdotal evidence that some middys did not initially like 55gr 5.56 but shot heavier 5.56 fine and after a few mags then the 55gr stuff ran fine. if the buffer weight does not solve it I have a mag mk262 you can try free of charge if your interested.</blockquote>