Colt CAR-15

CAR-15 stood for Colt Automatic Rifle-15 and was used by Colt to market a family of AR-15/M16-derived weapons in the 1960s and early 1970s. GlobalSecurity describes CAR-15 as a family that included rifles, heavy-barrel rifles, carbines, a submachine-gun-labeled short carbine, and a survival rifle. Modern Firearms places the XM177/Colt Commando inside this same shortened-carbine lineage. The database category says machine gun, but the most common historical meaning is a family of rifles and carbines, especially short 5.56 mm Colt Commando variants.

The most famous CAR-15 descendants were compact 5.56 mm carbines such as the XM177. These kept the AR-15/M16 operating system and magazine family but shortened the barrel and stock package for users needing a handier weapon. That made sense for special operations, aircrews, advisors, and troops operating in confined terrain, but it came with reduced velocity, louder muzzle signature, and reliability or parts-standardization issues typical of early short AR-pattern weapons. The page should explain these tradeoffs rather than only saying it was a small M16.

CAR-15 and XM177 variants are historically important because they showed the U.S. military wanted shorter AR-pattern weapons well before the M4 became standard. They saw Vietnam-era use by specialized units and helped define the practical requirements for compact 5.56 mm carbines: collapsible stocks, shorter barrels, manageable flash, and parts compatibility with the service rifle family. A richer page should connect the CAR-15 to later carbine evolution, making it clear that the weapon's legacy is larger than its original production run.