The SAM-Rs were assembled by the Precision Weapons Section of the Weapons Training Battalion at Marine Corps Base Quantico. For the War on Terrorism, the approximately 100 assembled SAM-Rs were sent to the 22nd, 24th, and 26th Marine Expeditionary Units (MEU) of II Marine Expeditionary Force (MEF), which is located at Camp Lejeune, North Carolina. Squad Advanced Marksmen of I MEF, which is based at Camp Pendleton, California, made do with M16A4s with KAC M5 RAS forearms and TA31F ACOGs. They were nicknamed "West Coast SAM-Rs" though they are simply M16A4s with optics and bipods, and not an 'accurized' rifle like the SAM-R used by the Marines of II MEF.