SHOULDER MOUNT U.S. Marine Corps Lance Cpl. Christian Christopoulos, left, and Cpl. Tyler Stampes fire an M110 semi-automatic sniper system in an improvised firing position during marksmanship training on Camp Hansen, Okinawa, Japan, Jan. 6, 2015. The Marines are assigned to the Special Reaction Team. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 464343-W-TLK97-181.jpg Photo Gallery