37/38/40MM

37 / 38 / 40mm covers large-bore low-velocity cartridges developed primarily for law enforcement, military training, crowd control, signaling, and specialized operational use. This category includes 37 mm, 38 mm, and 40 mm rounds and related components used in launchers rather than conventional firearms, spanning both lethal and non-lethal systems.

Items in this section include baton and foam projectiles, rubber ball and stinger rounds, smoke and chemical agent cartridges, flare and signal rounds, inert and dummy examples, factory cutaways, and prototype or evaluation-only designs. Variations in construction, projectile material, payload type, markings, and color coding reflect evolving doctrine and manufacturer approaches across multiple decades. This category is especially useful for collectors interested in police and military less-lethal development, launcher ammunition identification, and the transition from early signaling systems to modern crowd-control technologies.