TASKER Network Talks Sig XM5 and 6.8 x 51mm – Is the AR-15 and 5.56 Obsolete?

Has the AR-15 and 5.56 been made obsolete with the announcement of the Army’s adoption of the Sig XM5 and the 6.8 x 51mm cartridge? Are criticisms about size, weight and capacity valid, or is that an overly simplistic view? We reached out to Frank Woods of TASKER Network to discuss his primer on the…