To date, the Army has completed more than 117,000 M4A1 upgrades on the way to the eventual transformation of more than 480,000 M4 rifles. As a result, it is entirely conceivable that the Army will explore new requirements and technologies for the M4A1 as time goes on. The service’s so-called M4 Product Improvement Program, or PIP, is a far-reaching initiative to upgrade the Army’s entire current inventory of M4 rifles into higher-tech, durable and more lethal M4A1 weapons, Army spokesman Pete Rowland, spokesman for PM Soldier Weapons, told Scout Warrior in an interview.
