Bushmaster made about 100 rifles for the Army; REMFs or PSDs prolly got those but most likely not a single Infantryman ever saw one. They also provided some for the Marines for a training application where they were fitted with a simulator.I googled in the 1990's Bushmaster made M4 or M4A3 for the military during the time of Desert Shield.
Interesting.
They did make M4s for FMS (foreign Military Sales) to Georgia and Czechoslovakia, and a couple others.