While the AR-10 and AR-15 constitute the most recognizable pattern of the ArmaLites, the old Irish tune actually mostly refers to the later 18 and 180 models. I find this particularly entertaining, as a man of Irish heritage, because ultimately that is the design that has won the world over.
Nearly every modern service rifle of the western militaries is an AR-18 variant if it isn’t an AR-15 variant. Sometimes its a compatible hybrid of the two, like the MCX SPEAR LT and BRN-180. Speaking of the BRN and others, that 180 market dominance gets even more pronounced when we look at rifles that are largely commercial offerings.
9-Hole shows that as basic as this latter 20th century 5.56 rifle is, it was a stand up carbine of the era and very much the progenitor of the modern rifle design.
