A U.S Army Special Forces Soldier plays pool with the locals of a village in Afghanistan, 2002. Note the Heckler and Koch MP5A3 submachine gun strapped to the Soldier. The 9x19mm MP5 is less likely to be carried in the field than the M4, but many Special Forces Soldiers use them as personal defense weapons.
(DoD photo by: PH2 (DV) Eric Lippmann, U.S. Navy)

A U.S Army Special Forces Soldier plays pool with the locals of a village in Afghanistan, 2002. Note the Heckler and Koch MP5A3 submachine gun strapped to the Soldier. The 9x19mm MP5 is less likely to be carried in the field than the M4, but many Special Forces Soldiers use them as personal defense weapons.

(DoD photo by: PH2 (DV) Eric Lippmann, U.S. Navy)