For real. The majority of the price difference isn't materials or workplace safety but privatized vs state enterprise. A sizeable chunk of the $5000 price difference is the cut that goes to the shareholders of General Dynamics. It's the same reason the Chinese J20 costs so much less than the F35 and had dramatically less production issues.

Russia only had a privatized defense industry from the early 1990s until in 2007 they decided privatization of certain industries was a mistake. They undid the privatization of their aerospace, defense, high tech manufacturing, and key heavy industries. It's taken almost a decade to repair the damage of privatization and rebuild capacity but we are now seeing the fruits of those efforts.

In Russia their 155mm artillery shells are currently manufactured by KBP Instrument Design Bureau, a wholey owned subsidiary of the Russia state owned Rostec holding corporation.

In the US all their 155mm artillery shells are manufactured at the US government owned Scranton Army Ammunition Plant, which is operated by the private sector defense contractor General Dynamics. That same facility used to be able to produce over a million 155mm field artillery shells per month back in the 1940s before modern factory automation and even today claims to have the ability to ramp back to that capacity (at a cost) with only a couple months notice. As part of the US propaganda blitz, BusinessInsider recently did a PR and tour video of the plant.