So please point out an “AR-15” that was ever used by the military.
Or a select fire “AR-15” that was ever manufactured.
“So please point out an “AR-15” that was ever used by the military.”
Small numbers of early ArmaLite select-fire rifles in whichever 22 centerfire cartridge was then current were sent to Southeast Asia with advisory teams. One guesses that they were called AR-15s on some level ... Army Ordnance, or whoever was supervising the project, may have used entirely different nomenclature. There were a number of different “centers of excellence” inside the Army establishment at the time ... not all agreed on what concept for small arms ought to prevail.
It’s been written about in American Rifleman, Small Arms Review, Soldier of Fortune, and possibly additional periodicals. William Hallahan may have written about it in his incendiary book _Misfire_; readers are free to disagree with his accusations, but much of the documentation has never been in doubt.