This chapter discusses theories and research regarding youth’s motivations for carrying weapons, the demographics of weapon carriers, and predictive, protective, and risk factors for juvenile weapon carrying. Through exploring the literature, it documents areas in which scholars expand with future research and potential implications for policy development. While scholars have brought a great deal of understanding to the topic of adolescent weapon carrying and use, the chapter argues that more research is necessary to comprehend the behavior. It discusses an overemphasis on adolescent weapon carrying in school. The chapter emphasizes three issues: causal ordering, variety of weapon types, and gender. Qualitative research could greatly expand current understandings of adolescent weapon carrying and use motivations. Ethnographic, mixed methods, or other qualitative pursuits explore how weapon carrying leads to delinquency, adolescent motivations for carrying, and other correlations observed with carrying, by asking and observing adolescents as they participate in carrying behaviors.