This study addresses a gap in gun violence research by examining firearms seizures made by the Stockholm police in 2022. We analyse 184 cases, describing patterns of dischargeable firearm seizures (trends, types, places, and links to narcotic offences) and explore spatial associations of firearms with area-level living conditions, vulnerability, proximity to open drug scenes, and shooting frequency. The spatial analyses find that firearm seizures are concentrated in areas experiencing lower living conditions, near open drug scenes, and where shootings are more frequent, which is in line with research on gun violence. Furthermore, the results show that most seized dischargeable firearms are pistols, often found in residential or semi-private settings and frequently linked to narcotics offences. These patterns reflect the broader challenges facing disadvantaged neighbourhoods. Monitoring firearm seizure characteristics could inform police strategies on gang conflict patterns and resource allocation.