I believe it's companies like CheapThanDirt that will really put pressure to cities such as NY and ammunition is the key to applying such pressure. If such companies refuse to stock ammunition from manufacturers that deal with NY municipal contracts, it will severely affect their commercial sales. Kudos to CTD for taken the first step.

Glock, on the other hand, would be hard to turn. No matter how much negative press they receive, the public will still keep buying them because of the branding.