People still pressuring you to 3D print a gun?
Well, here's "A gun" you can download and print without compromising your moral standards or getting your name on a watch list. A least I hope it doesn't put me on a watch list.... ;-)
It's just a keychain, but it should provide a more interesting response the next time somebody asks if you've ever printed "A gun."
This is a very quick & easy print using the STL file posted here. I printed it in black PLA on a MakerGear M2 at 0.25mm extrusion with 2 surface layers and 25% fill (to keep the part stiff). It takes about 4 grams of PLA and prints in under 10 minutes.
The metal ring is a standard part which you simply attach to "A gun" the same way you attach keys to it.