Four of the five weapons factories that North Korean leader Kim Jong Un visited last week are known facilities in a munitions hub in the north of the country and near the capital, according to analysis by NK Pro and other researchers, shedding light on how the military is pushing forward munitions “modernization” plans.

Kim inspected the five major factories last week to call for mass producing critical components to weapons systems ranging from the country’s longest-range nuclear missiles aimed at the U.S. to short-range nukes aimed at South Korea, and even small arms for