 There is a high degree of parts commonality between the Mk48, M249 and Mk46 machine guns, which simplifies maintenance and repair.The use of M1913 "Picatinny" rails allows the fitting of various accessories from the SOPMOD kit, such as the ECOS-N (Enhanced Combat Optical Sight) red dot sight and other sighting or target-designating devices.The Mk 48 can also be fitted with a vertical foregrip for increased controllability during sustained fire.