Extending the work I was doing while following the Shooter Tutorial series by Andrzej Koloska: shootertutorial.com/
This environment was made in Maya from scratch in January 2017, and imported object by object into UE4. All the guns were made in 2015 and animated in the last couple months. The Shooter Tutorial series doesn't cover reload anims (guns would always go off-screen to reload), but those were easy enough to figure out using google and the epic forums.