I have two grandchildren, boys 3 and 4.
Right now they are playing with toy pistols and rifles.
I'm a big believer that young kids need this "bang bang" fantasy play.
A really good book on this subject, I might start a thread on it.
I have two sons, age 27 and 31.
We raised them the same way.
They did not get their first BB gun until they were ten.
And they only used it under my supervision.
A Red Ryder was their first.
When they were 13, they went to a 410.
Safety and handling was always the word.
I hope to raise my two gradsons the same.
I hope this helps.
More on Red Ryder and teaching safety:
http://www.daisy.com/