Britain’s defence leadership is not able to say how many Chinese-made 3D printers are used in the Ministry of Defence’s (MOD) production of critical military components. According to the reporting, MOD officials face uncertainty about the scale of the China-sourced devices already in place, even though security concerns have been raised about relying on foreign-made equipment for parts tied to sensitive defence capabilities. The accounts describe a gap between concerns over supply-chain and technology security and the information MOD currently holds or can provide regarding the specific number of such printers deployed. The reporting also frames the inability to provide a clear figure as a transparency issue around the extent of Chinese-made hardware integrated into defence manufacturing. Overall, the available information indicates that MOD does not have an immediately confirmable inventory count for these devices, despite the ongoing discussion of risks associated with them.