Apperently tha lawsuit is against both the store that sold the gun and the manefacturer that sold it to the store.
The argument is that the store should not have sold the rifle, becauce the sniper (can't remember the name) was prohibited from buying due to a prior conviction - and that the manefacturer shouldn't have sold it to the store, because the store was known for selling firearms to people who wasn't allowed to buy them (it was fined by the Federal Government).
So I won't say that the families don't have a chance of winning - they are just using 'The American Way'