In 2014, American firearms designer Jim Sullivan presented a online video interview concerning his contributions to the M16 and M4 relatives of rifles when Doing the job for Armalite. A mentioned critic with the M4, he illustrates the deficiencies present in the rifle in its recent configuration. From the video https://kac-m4-ras06285.blog2freedom.com/29535573/the-5-second-trick-for-ras-rail