Big Guns
According to Lloyds List, if you mention 12.7 mm guns to private security providers and there is likely to be a sharp intake of breath.
Mention them to gung ho mercenaries and you get a “yeehaw”…mention them to Spanish legislators and you get a “sure, why not”.
Spain has become the first flag State to approve the use of high-calibre weaponry by non-military vessels, guns which are dubbed as “flesh and metal liquidizers”.
Norway is allowing 12.7 mm semi-automatic weapons.
http://www.sjofartsdir.no/PageFiles/6995/Veiledning%20Bruk%20av%20V%C3%A6pnede%20Vakter.%2001072011.pdf