The US Army Project Salvo VietNam M16 Barrel Kit is a great upgrade kit to turn your marker into a M16 Vietnam Assult Rifle! The VietNam M16 Barrel Kit is the ultimate realistic upgrade for your marker. It comes with a 18" M4 style rifled barrel with a removable muzzle brake. The muzzle can be removed to install silencer, grenade launcher and other awesome upgrades. The barrel kit also comes with a M4 style front sight and vietnam handguard. This is a complete kit that is ready to action.