One of the perceived faults with the AR-15 platform that has served for four decades in service is its supposed unreliability. Start talking M16s, and it won’t be long until someone brings up jammed guns in Vietnam. While the problems were real and the mistakes were unforgiveable, the AR has evolved and matured over the years to become not only one of the premier weapons on the battlefield but a commercially dominant seller in civilian adaptations. The lessons learned over...