it seems puting a sound moderator to the end of the barrel is a hot trend now!!
a rifle with such a device is no longer handy a nice looking gun becomes ugly and clumsy
if the noise is an issue then a nice little ear protection device is easier to carry and much cheaper too!
the only advantage of 6 mm xc is lack of recoil and high accuracy in a light short action handy rifle suitable for the youth and beginers du to the light recoil.