A Marine with 1st Battalion, 8th Marine Regiment fires the M249 Squad Automatic Weapon during a company sized combined-arms attack on range SR-9 at Marine corps Base Camp Lejeune, N.C., Sept. 24, 2015. During the training, Alpha Company fired the M4 carbine, the M16 A4 service rifle, M249 Squad Automatic Weapons, M240B machine guns, M2 .50 caliber heavy machine guns, MK19 40mm grenade launchers and M224 60mm lightweight mortar systems. - A Marine with 1st Battalion, 8th Marine Regiment fires the M249 Squad Automatic Weapon during a company sized combined-arms attack on range SR-9 at Marine corps Base Camp Lejeune, N.C., Sept. 24, 2015. During the training, Alpha Company fired the M4 carbine, the M16 A4 service rifle, M249 Squad Automatic Weapons, M240B machine guns, M2 .50 caliber heavy machine guns, MK19 40mm grenade launchers and M224 60mm lightweight mortar systems.