DramaScape put up a new modern military map on DriveThruRPG, free to download, of an Armory.
From the update:
Free map from Dramascape, the Armory.
The Armory is a 24 x 20 inch, full color floorplan of an Armory, with Hex, Square and No overlay.
This product is a single room armory. The entrance to the armory is at the north center of the map. The armory has a massive crack down the center in the concrete and smaller cracks going across the map. The room features multiple tables all with briefcases, guns, cartridges, and crates on top of them.