A new release from DEF Model covers blank firing adapters suitable for M2 and M240 machine guns.
This is partial text from the full article (usually with photos) at https://armorama.com/news/modern-us-mg-blank-firing-adapter-from-def
This is partial text from the full article (usually with photos) at https://armorama.com/news/modern-us-mg-blank-firing-adapter-from-def