In 2014, American firearms designer Jim Sullivan furnished a video job interview concerning his contributions into the M16 and M4 loved ones of rifles although working for Armalite. A famous critic of the M4, he illustrates the deficiencies present in the rifle in its current configuration. From the online video, https://emiliohzkxg.designi1.com/51402596/what-does-knights-armament-quad-rail-mean