Berlin, Germany. 8th Aug, 2017. Members of Grenzschutzgruppe 9 (GSG 9; English: Border Protection Group 9) during a visit by the German interior minister Thomas de Maiziere (CDU) to the headquarters of
West German Militaria - Militariarg.com
Where to look for a GSG9-type helmet w/visor - Airsoft Canada
Blog - The Elite: Grenzschutzgruppe 9 - Osprey Publishing