The Stopping Harmful and Outrageous Torts Act amends federal law to expand legal protections for firearms manufacturers, retailers, and trade associations against lawsuits related to how their products are misused by criminals or third parties. The bill immediately dismisses any pending lawsuits that fall under these protections and significantly narrows the exceptions that would allow people to sue gun sellers and manufacturers. Key exceptions that preserve the right to sue include cases involving unlicensed straw purchases, negligent entrustment, knowingly violating federal firearms laws, product defects, and breach of warranty claims. The legislation also allows gun manufacturers and sellers to remove state lawsuits to federal court and requires plaintiffs to prove specific facts before their cases can proceed, while entitling prevailing defendants to recover attorney fees. Additionally, the bill preempts state and local gun liability laws that conflict with these federal protections.