The latest update from HK-USA to the commercial variant of the legendary HK416, the MR556 A4 represents an enhanced example of “no compromise” HK performance. Its short-stroke gas piston operating system does not impart hot carbon fouling back into the action, and an adjustable gas regulator lets the operator tune the action for suppressed or unsuppressed operation.
Heckler & Koch firearms must be purchased through a licensed FFL dealer. View full specs, models, and dealer options on the official HK USA site.
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