fitted with multiple Picatinny rails. These enable it to mount various commercial scopes, flashlights, lasers, and even secondary underbarrel weapons such as grenade launchers and shotguns. References External links Ares Defense: Official Site Nazarian's Gun's Recognition Guide (FILM) 200 Round Burst on Tripod (.MPEG) 5.56×45mm NATO machine guns Assault rifles of the United States Squad automatic weapons ArmaLite AR-10 derivatives AR-15 style rifles Weapons and ammunition introduced in 2002