Inn the early 80's I qualified with a Viet Nam era M-16A1 and a WWII vintage 1911.
I swear you could send an MEU ashore with Sopwith Camels, 1903 Springfields, and Krag-Jorgensens, and theyd still kick every ass in sight.
Damn straight. Semper Fi.
I was issued an ancient .45 in Vietnam that was stamped “1899.” It would rattle when I walked. I've never seen another one since.