In 2014, American firearms designer Jim Sullivan presented a video job interview concerning his contributions into the M16 and M4 relatives of rifles though Doing work for Armalite. A pointed out critic from the M4, he illustrates the deficiencies located in the rifle in its existing configuration. In the video, https://sethxngrh.therainblog.com/28834046/top-guidelines-of-m4-ras-handguard