Editor’s note: This article is the second in a two-part series on North Korean weapons factory upgrades. The first part can be found here.

North Korea appears to be ramping up efforts to produce anti-tank missiles, according to NK Pro analysis of satellite imagery, upgrading multiple factories suspected of manufacturing the weapons likely of interest to Russia amid their growing arms trade.

The expansion of the two facilities in the northwest comes as the DPRK has also started construction at a factory producing rifles reportedly modeled after Russian products, while new extensive underground facilities