Little brother tells just how his big brother would get the guns up to the room. Pay a bell hop to use the little gold cart, simple as that.
Little brother also admits to doing whatever the killer brother wants for monetary/food gain. Somehow I bet he’s going to be implicated in helping his criminal brother. Maybe nothing significant and possibly unknowingly but it’s probably one of the reasons he is so fidgety/weird.
I wonder how many guns were purchased in the brothers name?
If little bro Eric isn’t implicated in the massacre he will still be exposed in other crimes that his brother was doing for years. The massacre wasn’t the first rodeo for these two.