The Johnson Machine Gun Company, on State Street. Different world.
It never replaced the BAR, even though the side-mounted magazine lets you load more rounds. Melvin Johnson designed a rifle that he thought would replace the M1 Garand. It didn't, but had some innovations that he carried forward into this light machine gun, particularly the in-line stock that minimized muzzle rise.
Capt. Johnson wasn't successful with his design, and only a small number of his machine gun were built. In Boston. It's likely the last time a Boston lawyer designed a gun that was built there.