I really don't see how laws are going to change the gang culture. It's there. It's going to be there until we deal with the root causes—poverty, education, housing. There are social and economic issues that could be focused on, but I don't believe restricting guns is going to stop the violence that exists because of those underlying issues.
Someone who is involved in a gang is usually not a law-abiding citizen. The thing is that our experiences as first nations have not been positive, so sometimes disobedience of the law exists because of our experiences and systemic racism.