According to Official Guinness Records,
The heaviest weightlifting snatch for the male 77 kg category is 177 kg (390 lb 3.4 oz), achieved by Lyu Xiaojun (China) at the 2016 Olympic Games, in Rio de Janeiro, Brazil, on 10 August 2016.Lyu recorded a total weight of 379 kg winning the silver medal.
For a complete list of 2016 records, please visit 2016 Guinness Records in Brazil.