Gun Present takes us inside the everyday operations of the law at a courthouse in the Deep South. Illuminating the challenges accompanying the prosecution of criminal cases involving guns, the three coauthors—an anthropologist, a geographer, and a district attorney—present a deeply human portrait of prosecutors’ work. Built on an immersive, community-based participatory partnership between researchers and criminal justice professionals, Gun Present chronicles how a justice assemblage comprising institutional structures and practices, relationships and roles, and individual moral and emotional worlds informs the day-to-day administration of justice. Weaving together in-depth interviews, quantitative analysis of more than a thousand criminal cases, analysis of trial transcripts, and over a year of ethnographic observations, Gun Present provides a model for scholar-practitioner collaborations.