It's a shorter version of the M16 used by the US military and dozens of other countries, and it fires 5.56×45 mm NATO rounds.

Phil Massaro tackles the 6mm ARC, a military cartridge that's equally at home in the hunting field.

Empty artillery shells are handled by a worker in the production hall of weapons manufacturer Nammo on Jan. 17, 2024, in Raufoss, Norway. (Petter Berntsen/AFP via Getty Images) Advertisement ...

The service’s Joint Program Executive Office for Armaments and Ammunition broke ground Feb. 5 on a 6.8 mm ammunition production facility at Lake City Army Ammunition Plant in Independence ...

(Petter Berntsen/AFP via Getty Images) PARIS — Denmark picked Norwegian ammunition maker Nammo to ... All four are NATO standard calibers. “Nammo has what it takes to become a long-term ...