Montana Title 45. Crimes § 45-8-374. Limitations on negligent marketing claims

(1) the marketing practice directly targeted individuals who are legally prohibited from owning firearms;

(2) the marketing practice encouraged or facilitated the unlawful use of firearms;

(3) there is a direct and substantial causal link between the marketing practice and the harm suffered by the plaintiff;  and

(4) the marketing practice violated a state or federal statute explicitly regulating the sale or marketing of firearms or ammunition in a manner that constitutes a willful and knowing violation of the law.