Mounted Weapon Marine Corps Lance Cpls. Ruben Torres and Cameron H. Machado fire a shoulder-mounted assault weapon during a training exercise at Marine Corps Air-Ground Combat Center Twentynine Palms, Calif., Jan. 22, 2019. SHARE: Download: Full Size (1.81 MB) Tags: Marine Corps Credit: Marine Corps Lance Cpl. Nathaniel Q. Hamilton VIRIN: 190122-M-PH977-1129C.JPG Photo Gallery