Sima shows how to assemble a 3D-Printed Over-Under Airsoft Shotgun with the STL files available at Cults3D... "Airsoft Over-Under Shotgun designed to work with gas powered shells (Madbull/PPS Airsoft/ APS). Mostly 3d Printed, excepting some springs, pins, screws and some electrical tubing for the barrels.
Features: