The IAR (Infantry Automatic Rifle) program was originally initiated by US Marine Corps in an apparent intent to replace aging M249 SAW light machine guns in their "automatic rifle" (squad automatic) role. USMC sought lighter and more maneuverable weapon, still capable of at least some sustained firepower. The Marine Corps is planning to purchase 4,476 IARs to replace 2,000 M249 light machine guns currently employed by automatic riflemen within Infantry and Light Armored Reconnaissance Battalions.
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