A U.S. Special Forces soldier takes aim with MK 12 SPR during training acitivities at Rawah, Iraq. The MK 12 is a highly modified AR-15/M-16 5.56mm design, known as the Special Purpose Rifle. Army Special Forces marksmen use both the SPR and the 7.62mm M110 Semi-Automatic Sniper System (SASS). Their ability to fire in semi-automatic mode make them more suitable for carry by a member of an infantry squad than a bolt-action rifle.

U.S. Army Special Forces are experts at unconventional warfare and foreign internal defense. Green Berets with the various Special Forces Groups (SFG) are deployed around the world protecting the United State's vital interests.