I did not create the original models, credit to :
3dmillitaryassets on cgtrader for the original glock model
Johannesbazaryan on sketchfab for the X300U model
Epavlenko on sketchfab for the vortex red dot
CTRL+Pew for the mag extension
Lovelythelynx for the holster
Me for assembling, exporting, optimizing and texturing (some) of the models

To install just drop all 4 folders into C:\Users\YOURNAME\Documents\inZOI\AIGenerated\My3DPrinter