In 2004, the United States Special Operations Command (USSOCOM) issued a solicitation that called for a new weapon for special operators. However, the Special Operations Forces Combat Assault Rifle wasn’t just to be a single rifle, but actually, a platform that would be designed around two different calibers yet maintain a high commonality of parts while having identical ergonomics. The weapon was to replace the various AR-15 derived 5.56x45mm rifles as the updated M-14s that were then in service with the special operators. Among the entries included the Heckler & Koch HK416 modular system, but in the end, the FN...