FBO is neither weird nor revealing. It’s the Gov’t’s way of “competitively sourcing” the goods and services they need. Requests for everything from clerical services to DaVinci surgical robots are pretty common on that site. Most of the listings are mundane at best. None of the listings are classified, so I doubt there’s anything on here about “arms.”
Sigh. It’s like telling someone you work for a robotics company and they start yammering at you about how drones are unethical. Sling your moralizing lectures elsewhere.