M is USA militaries standard naming scheme like Russian tanks with T-60/70/80/90 etc. M just stands for model if you see XM its a experimental once it drops the x its in full service (normally) i.e all weapons you listed are or have once been American military issued weapons
Morieen_ t1_ja6ktnr wrote
Reply to comment by Kasgaan in The list/ stats that I knew better than the periodic table in high school. by promantriple
M is USA militaries standard naming scheme like Russian tanks with T-60/70/80/90 etc. M just stands for model if you see XM its a experimental once it drops the x its in full service (normally) i.e all weapons you listed are or have once been American military issued weapons