NOT true..... was active duty then. Both security an LE side never carried less than 18 rounds for a revolver or 120 for a M16. My EOD detachment kept our small arms at their armory. Watched em at their guard mounts an turn ins at times an issue was standard. Never 5 rounds only.
The dweebs at Homestead probably carried five. I think they were afraid the Aircraft Generation Squadron would swipe their guns.
You are correct. AF Security Police (not the Law Enforcement side of the house) were given 120 rounds for the M16. Overseas it was bumped to to 240 rounds. That is my SP experience (1973-1984), but it could have been different based upon where you were and what you were guarding. The most I’ve had to carry was 480 rounds during my stint in Thailand in 1975.
We also had access to and were trained on using the Mark 19 40mm, .50 cal, and 81mm mortar.