The M4/M4A1 5.56mm Carbine is a lightweight ... It is now the standard issue firearm for most units in the U.S. military. Equipped with a shorter barrel, collapsible stock and detachable carrying ...

The Colt CZ deal is not the first time the Ukrainian military has tried to move its main rifles on to NATO calibers. In 2017, a much-touted rollout of a copy of the American M4 called the WAC-47 ...