This article offers the first scholarly analysis of the shift from revolvers to semi-automatic handguns in Canada to contribute to our knowledge of police militarization. In the 1990s, most Canadian police handed in their venerable service revolvers and received modern semi-automatic pistols. Advocates of new weapons pointed to relatively rare but high-profile shootings of police to show the dangers of law enforcement work and the need to have better firearms. The gun industry encouraged the rearming of police through an aggressive marketing campaign emphasizing that modern police forces required more advanced weapons and the military lineage of their products. The transition to semi-automatic handguns sometimes proved controversial, as human rights advocates believed the new handguns could result in excessive use of force. Despite this concern, most police were rearmed by the beginning of the twenty-first century.