There is no mixed opinion, you need to sharpen your reading skills. Everyone has said the exact same thing.
As for your girlfriend's grandfather, he's a grandfather, so he's old. Which he means likely acquired his collection prior to the law on replica firearms (1995/8). Also, I'm betting a good number of what you think are replica firearms are actually deactivated firearms.
This is a straight yes/no situation. No.
"The Bird of Hermes is My Name, Eating My Wings to Make Me Tame."