The misuse of firearms, particularly illegal ownership, continues to pose a global challenge, threatening public safety and social order. In Indonesia, the prevalence of illegal firearms highlights significant gaps in existing legislation, which struggles to comprehensively address the complexities of firearm-related crimes, including those involving corporate entities. This study aims to evaluate the formulation policies of criminal law concerning illegal firearm ownership within the context of Indonesia'sbroader criminal law reform. Utilizing a normative juridical research method, which involves analyzing relevant laws, doctrines, and legal principles, the study identifies key weaknesses in current policies, including the lack of clear juridical qualifications for crimes and inadequate mechanisms for corporate accountability. The findings reveal that the current legislative framework lacks synchronization with international legal standards and fails to provide adequate deterrence. The discussion emphasizesthe need for rational and systematic policy reforms, incorporating comparative studies from other jurisdictions. The study concludes by recommending comprehensive updates to the legal framework, ensuring clarity, consistency, and effectiveness in addressing illegal firearm ownership, ultimately enhancing public safety and reinforcing the rule of law.