Overwatch… A Marine sniper with his MK11 rifle. The MK11 is a modified Knights Armament SR-25. Note the suppressor/silencer as part of the MK11 setup. Fairly accurate for a semi-automatic rifle, it obviously gets the advantage for quick follow-up shots. The suppressor/silencer also helps in that regard by reducing recoil and muzzle flash, letting the shooter maintain a constant sight picture.