We recently lead an AR15 LE armorers course with Sonoran Desert Institute teaching the Michigan Tactical Officers Association (MTOA). This was a two day course consisting of assembly and disassembly, cleaning and troubleshooting. We were fortunate enough to meet Charles from 248shooter.com who was covering media for the event. This is his review of the course. http://248shooter.com/index.php/sdi-ar-15-armorers-course-review/