The M4A1

M4A1

This is a variant of M16A2 rifle meant for special forces much like the AK74U. This rifle is used by many NATO and US special force units. The rifle features 3 fire modes. Auto, 3 round burst and single shot. Due to it's auto fire capability it comes with a heavier barrel in order to withstand the heat produced while firing.The M4A1 carbines fire 5.56 x 45 mm NATO ammunition and are gas-operated, air-cooled, magazine-fed, selective fire firearms with a telescoping stock. The standard Special Operation rifles come with a SOPMOD kit. It includes Rail Interface System (RIS) hand guard developed by Knight's Armament Company, a shortened quick-detachable M203 grenade launcher and leaf sight, a KAC sound suppressor, a KAC back-up rear sight, an Insight Technologies AN/PEQ-2A visible laser/infrared designator, along with Trijicon's ACOG and Reflex sights, and a night vision sight. This kit was designed to be configurable (modular) for various missions, and the kit is currently in service with special operations units (though many soldiers have changed the Trijicon reflex sight for M68 CCO red dot sights and EOTech holographic sights).

Caliber: 5.56mm NATO
Action: Gas operated, rotating bolt
Overall length: 838 mm (stock extended); 757 mm (stock fully collapsed)
Barrel length: 370 mm
Weight: 2.52 kg without magazine; 3.0 kg with magazine loaded with 30 rounds
Rate of fire: 700 - 950 rounds per minute
Maximum effective range: 360 m
Clip Size: 30 rounds(max)

This is the so-called SOPMOD package.