I'm not sure about CONUS but many films & TV productions are produced overseas to save $$$.
The Expendibles movies(I II & III) were filmed in Eastern Europe.
They used many different weapons & SFX systems.
The productions had a few stunt performers killed too.
I'm not sure how many times film & TV crews still use live firing weapons but Id bet it's mostly outside the US(not OSHA, EPA or union regs).