Models
Negative 3D Printable Models. Makeshape.co have 3 Negative 3D Printable Models.
Vivosun (and other brand) tent 9.4” x 3.9” Pre-filter to 4″ Air Vent Conversion
Printables
TFro3
Free
M12 Battery Socket Negative (STEP FILES)
Printables
Deifox
Free
3DTAC / DELTA Airsoft Resonator 2 models included
Cults3d
3DMXStudio
$5.21