Im pretty sure 7 weeks is enough formal training for him to be able to fire it and not blow his foot off.

I mean i NEVER shot a handgun before, i went to the range, rented a glock, and shot 1000 rounds through it. Then i went with a buddy of mine who has been to Tactical Shooting Schools and spent about a hour with him learning how to properly hold the gun and how to shoot/aim.

Ive never fired an assault rifle but i wouldnt be scared of it at all