Look at the book 'We don't play with guns here' Penny Holland.
Also the government has just issued guidance that states that weapon play is beneficial . especially to boys. The guidance, called Confident, Capable and Creative: Supporting Boys' Achievements, is issued by the Department for Children, Schools and Families.
Read more:
http://www.dailymail.co.uk/news/arti...#ixzz0ivZu0ZmA