Since the latest school shooting, there has been a lot of discussion about what the minimum age to purchase various types of firearms should be. In particular semiautomatic weapons like AK-47, AR-15, and even hand guns.
I really don’t think any child under the age of 18 should have access to any type of firearm without adult supervision. However, if an 18 year old has been trained in how to handle and fire the weapon, then he is not too young, but without proper training, he very well may be. HOW ABOUT THIS; no one under the age of 21 can purchase or own any firearm unless and until he has attended a certified training course.
When I was a kid, most kids were trained how to handle guns buy their fathers, but these days many kids are raised in homes where there is no father. Some public schools use to teach gun safety but they quit doing that many years ago.
Of course there is also the bigger question of mental stability which I discussed in the following blog post: https://cyberpolyticks.blogspot.com/2018/02/posible-reason-for-all-school-shootings.html
You should also watch this video “What Do All School Shooters Have in Common”. https://www.youtube.com/watch?v=d6phuIwHecQ