A row of M240B medium machine guns await use in the live-fire portion of the Battle Skills Training School machine gunner course, attended by Marines with 2nd Marine Logistics Group aboard Camp Lejeune, N.C., Oct. 4, 2013. The students in the course trained with M240Bs along with MK19 Grenade launchers and M2 Browning .50-caliber machine guns, although they only fired live rounds with M240Bs and M2s.