The Commission internationale permanente pour l'épreuve des armes à feu portatives (English: Permanent International Commission for the Proof of Small Arms), abbreviated C.I.P., is an international organisation which sets safety standards for firearms. As of 2025 its members are 16 national governments, of which 11 are European Union states. The C.I.P. safeguards all firearms and ammunition sold to civilian purchasers in member states. To achieve this, the firearms are proof tested at C.I.P. accredited Proof Houses. The same applies for cartridges. At regular intervals, cartridges are tested against the C.I.P. pressure specifications at the ammunition manufacturing plants and at C.I.P. accredited Proof Houses. Source: Wikipedia (en)