What skin ID does he have there? Could you confirm if your skin is not modified ingame?
As you can see in this video, we've run some tests, with players that are using the original gta vc with no modifications, and they all got headshot, it just shows that 66sick is using some kind of game modifications, even in RTV server he was accused of using head protection, and all he replied with was "i'm playing on 4k thats why wide screen", Fulton and GerZ have sussed him for a long time, btw we added picture of the players's game we tested this with, to prove that they're not using winter mod or anything