HKPF has a handful of Vietnam-era M-16A1 rifles. This is the only fully automatic version. They were replaced for being too unreliable and jamming during combat use. Cop carrying an M-16 into Hong Kong MTR station underneath IFC Mall tonight. pic.twitter.com/a8rJ2hHFy3 — dr. trey (@Comparativist) September 28, 2019