I think no prior criminal record would be a good place to start. I also think a waiting period is a good thing. Favorite gun(s) hmmmmm a heavily modded out AR-15 is a great gun with a drum clip and a scope man sweet. A nice .45 is also a thing of beauty. But personal favorite is a russian sniper rifle from WW2 shot that and man fell in love also a BAR .50 is a great gun.