Here is some stuff at the link I posted
The ad from the bank
http://www.michaelmoore.com/words/wackoattacko/images/ad_bankgun.jpghere is the transcript he posted from the movie:
Transcript of Bowling For Columbine: 
MOORE NARRATION: I had spotted an ad in the local Michigan paper that said if you opened an account at North Country Bank, the bank would give you a gun. 
TELLER 2: You do a CD and we'll hand you a gun. We have a whole brochure here that you can look at. 
MOORE: Mmm-hmm. All right. 
TELLER 2: Once we do the background check and everything. 
MOORE: Right, right. 
TELLER 2: It's yours to go. 
MOORE: Ok. Um, all right. Well that, um, that's the account I'd like to open. 
TELLER 2: We have a vault which at all times we keep at least five hundred fire arms. 
MOORE: Five hundred of these you have in your vault? 
TELLER 2: In our vault. 
MOORE: Wow. 
TELLER 2: We have to do a background check. 
MOORE: At the bank here or - ? 
TELLER 2: At the bank. Which we are a licensed fire arm dealer