http://www.thefirearmblog.com/blog/2018/01/06/usmc-set-field-hk-m27-combat-rifle-part-infantry-kit-overhaul/
The Commandant of the United States Marine Corps (CMC) has stated his approval for an overhaul of the front-line infantry Marine’s gear – including the fielding of the Heckler & Koch M27 Infantry Automatic Rifle as a standard issue rifle, to replace the M4 Carbine. The move comes after considerable debate as to what the USMC’s next infantry weapon configuration should look like.
In an interview with Military.com in late December, Commandant Gen. Robert Neller confirmed that a decision had been made to move forward with fielding the M27 more widely within the infantry.
Every Marine in an infantry squad, he said, will receive the high-end rifle. And while not every Marine in a grunt battalion will carry the IAR, others outside of the squad will also be issued one.
“I don’t think mortars and javelin guys need the M27,” Neller said. But, he added, artillery forward observers, fire support teams, and even engineers might be good candidates for the weapon.
“I’m going to wait and see,” he said. “It’s not that much [money].”