I just don't know about all this role play toys stuff.
I have 2 DDs. They went to nursery (there were no toy guns there of course) and made guns out of their fingers like the other children and said 'bcr bcr'. They grew out of it quickly because they started gravitating towards other girls as they hit school age and played those kinds of games less often.
I wouldn't have been keen to have toy guns at home, but we do allow princess dressing up, and play make up, however. Now some would say that would be equally damaging in terms of reinforcing societies view on body image etc on girls. So really I'm a bit of a hypocrite I think. We may have ended up allowing guns if we'd had boys who pushed for them.
What I would say is, I have two brothers and a sister - all over 40. The lads always got toy guns for presents, and we all played with them. My sister and I used to dress up as princesses all the time too (we didn't have the stuff you can get now of course, we 'designed' our own from old clothes).
The last thing either of my brothers would want to do now is pick up a real gun. If you saw me you would know that I'm not bothered about clothes and makeup.
I think however you play, and whatever toys you are allowed, you take your cues and values from how your parents and how they behave in real life.