After a stirring comeback to earn a semi-final place against Team USA on Tuesday they were unable to go one better and missed out on a medal with successive defeats to runners-up new Zealand and in the bronze medal play-off.
A late try edged the southern hemisphere team ahead with less than two minutes to go when Mendy Ignacio restored the Argentine lead after GB had battled back to level 12-12.
After earlier defeat to New Zealand Tony Roque’s side faced Argentina who had been beaten by eventual gold-medalists Fiji.
Ben Harris had put the Brits ahead with a try, but it proved to be the only time they would lead the match as Argentina responded with a similarly unconverted try but then went one better with a full score to stretch into a 12-5 lead at half-time.
Great Britian survived a second half push from their opponents and rallied to level the scores with three minutes to go when Oliver Lindsay-Hague scored for seven.
But almost immediately Argentina hit back and though Team GB had one final chance to respond, with a penalty and 20 seconds to go, they couldn’t make possession count and tears of joy filled Argentina players’ eyes at full-time.
The final which followed was won by the Argentine’s conquerors Fiji – who took their second consecutive Rugby Sevens gold after winning in Rio 2016. New Zealand were defeated quite convincingly, 27-12 in the end of a powerful display from Welsh coach Gareth Baber’s side.