SIG Sauer has prided itself in
innovative firearms design and the new Model MCX is no exception. It
is built with standards for the military, reliable, gas-operated,
short-stroke piston system that is the first AR platform rifle that
has an auto-regulating gas system which allows shooters to switch
between supersonic and subsonic loads, or unsuppressed or suppressed
operation, without manually adjusting the gas system. That means
quick changes will not compromise its operation.
