The M27 is a lightweight, air-cooled, gas-operated rifle used by the United States Marine Corps. It is designed for versatility and accuracy, featuring a 5.56x45mm NATO caliber. The rifle is equipped with a rail system for mounting various accessories, such as optics and lights, enhancing its functionality in different combat situations. This weapon is part of the Marine Corps' efforts to modernize its infantry capabilities. The M27 is intended to replace the M4 carbine in certain roles, providing improved range and lethality. Its design emphasizes ease of use and adaptability for various operational environments.