My DS makes guns out of his toast so I think it is a bit pointless to ban them. Kids have been playing with toy weapons forever and most turn out fine. I would think that removing the toy if they are hurting people and talking to them about their actions, they will learn that violence is not okay. JMO. My DH is hanging out to get some nerf guns too. And I reckon he'll be first in line to take the kids to laser tag or skirmish when they are older. I must admit that I avoided buying these things myself but I haven't stopped them from playing with gifts or friend's toys. I think my kids are pretty good at distinguishing pretend play from reality. DS has even said to me "It's just pretend mum" with the eyeroll and all lol.