Well if that happened at my house when i would have opened that door my dog would have pushed my old ass out of the way and would have had him for lunch.
I have had my own guns at the age of 12 been around guns all my life and I am now 70. So with that said if you try to tell me I need training.You will need first aid lessons on yourself.But in today's world some guys do need training.
When they are in a group they are a bunch of screaming monkeys and think they are tough. But when you start throwing lead into that group. They are the fastest running sissy's you will ever see. So open up with something like this. You will never have to put in a second mag.