my DS had a birthday party at the weekend and was given (amongst other, lovely things) an army set - little figurines etc, including guns, grenades, bayonettes etc. Its not the sort of theing we'd ever buy him 0 indeed, we don't buy and gun or war related toys at all. If DS pretends he has a gun, makes a gun from lego, or pretends to shoot with a water gun (which he does have), we don't make an issue of it, although its not really what he is 'into'.
Anyway, I think we'll let him have this toy for a few weeks, let him thank the child who gave it to him (a child from school who we don;t really know) and then quietly move the toy on in a little while.
But it got me wondering, what rules and thoughts do other parents have? I haven't discussed it with friends, but haven;t noticed a lot of gun play amongst friends' children either...