I am trying to add a light fixture to a room. I have access to the studs in the wall (new wall being added to the room), but the ceiling is drywalled. There is no attic access. Unfortunately, the ceiling is hung from sound isolation bars, which means there are drywall screws poking up into the cavity between the floor joists. Since I am fishing a wire in this space, it was recommended that I use MC-type wiring to protect the wire from snagging on a screw.
This leads to my problem- I need to install an "old work" style ceiling box, but due to the MC wiring and need to bond the metallic sheath, I need to use a metal ceiling box. How is this typically done? I have been unable to find anything in metal similar to those plastic old work boxes with the tabs that flip out.