The Marine Corps rejected adopting the M7 rifle, citing concerns about size, weight, and its unique mission requirements.
Add Yahoo as a preferred source to see more of our stories on Google. U.S. Marine Corps Cpl. Kevin Manriques fires an M27 infantry automatic rifle during training at Twentynine Palms, California. (Cpl ...
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Marines pass on Army’s M7 and keep the M27 in frontline use

Why would one service decline a new rifle built for greater range and penetration while another is fielding it as a centerpiece of infantry modernization? The Marine Corps has now answered that ...
Explore how the US Marine Corps transformed its rifle squads over the last decade, from the traditional 13-man, 3-fire team structure of 2015/16 to the widespread adoption of the M27 Infantry ...
The M27 IAR is chambered for 5.56mm NATO legacy cartridge, while the M7 rifle is chambered for the larger and more modern 6.8mm round.