In 2014, American firearms designer Jim Sullivan delivered a online video job interview relating to his contributions for the M16 and M4 loved ones of rifles though Doing the job for Armalite. A famous critic in the M4, he illustrates the deficiencies present in the rifle in its current configuration. https://m4rasrail17261.dreamyblogs.com/29881455/the-best-side-of-knights-armament-m4-quad-rail