Heckler & Koch HK416

The HK416 is an gas-operated assault rifle based around the M4 series of carbines. Is the product of a collaboration between Delta Force and the German arms manufacturer, Heckler & Koch (HK). One of the main changes to the M4 design is the 416's short-stroke gas piston system which is based around that found on the G36, also manufactured by Heckler & Koch.