In 2014, American firearms designer Jim Sullivan presented a video clip interview concerning his contributions to the M16 and M4 spouse and children of rifles even though Doing the job for Armalite. A famous critic with the M4, he illustrates the deficiencies found in the rifle in its existing configuration. https://kac-m4-rail45913.techionblog.com/29558830/5-essential-elements-for-knights-armament-quad-rail