> M16 has been replaced by the M4. This isn't a case of replacing old tech with new tech, it's a case of the changing realities of war making a short-barreled

> M16 has been replaced by the M4. This isn't a case of replacing old tech with new tech, it's a case of the changing realities of war making a short-barreled carbine adequate for most needs. The M4 has been around since 1988, they'd had plenty of time to do the switch if it really were the better weapon.