The following paper will examine the European Union’s reliance on Private Military and Security Companies (PMSCs). By analysing regulatory frameworks, parliamentary initiatives, and case studies, namely Operation Atalanta and EULEX Kosovo, it highlights both the operational benefits and the political, legal, and ethical challenges of outsourcing security functions. The paper will show that PMSCs can provide rapid deployment, specialised expertise, and logistical support, but cannot replace core military tasks reserved to States. Gaps in regulation, accountability, and oversight risk undermining parliamentary and democratic control together with the EU’s credibility. The paper concludes that PMSCs should remain a complementary tool within EU security and defence policy, integrated through common standards, and binding and common legislation.