My brother recently purchased the above item & the issue he is having is that the impact sockets keep falling off. After he called the store he purchased it from he was told the hog ring clip should hold the socket on but this doesn't work & he's tried more than 1 different 3/4" drive socket. Is this a common issue?

Tools & Hardware - Others - Makita - 3/4 Electric Impact Wrench 9 Amp