I don't think so.
MG stands for the city in Germany called " Mönchengladbach ". It is a city in North-Rhine, Westphalia, Germany.
This city was formerly known as " Munchen Gladbach " and hence the abbreviation MG.
ATR 72 is a French-Italian Passenger Aircraft Production from company named ATR. Their latest version is ATR-72-600.
RAS ( stands for Rheinland Air Service ) is a German company located in Mönchengladbach ( MG ) Airport which is converting the Passenger Aircraft ATR-72 for ASW / Maritime Patrol role.
My question was if the Aircraft being converted was the latest ATR-72-600 or ATR-72-500 ?
Thanks, that answers my question.
I think those are ATR-72-500, if I am not mistaken.