It can fire with a spring system. Thanks to the stl files inside, you can produce it at any scale you want. For quality production, you can produce it in pieces and assemble it easily. The spring coming out of a standard ballpoint pen can be used.
The FV4034 Challenger 2 (MoD designation CR2) is a third generation British main battle tank (MBT) in service with the armies of the United Kingdom,
Tank challenger
STL File Artillery Cannon ?・Design To Download And 3D, 51% OFF
STL file TANK HUNTER 🪖・3D printing template to download・Cults
STL File Artillery Cannon ?・Design To Download And 3D, 51% OFF
Mortilda Battle Tank STL Files by J0J0 — Kickstarter
TMP] 3D printable Sci-Fi Tanks Topic
STL File Artillery Cannon ?・Design To Download And 3D, 51% OFF
STL file Funnel for Anycubic Photon Mono Resin Vat Tank 🪖・Model to download and 3D print・Cults, anycubic resina
STL File Artillery Cannon ?・Design To Download And 3D, 51% OFF
Shock Calvary & Tanks: Makers Cult 3d STL Files
STL file TANK HUNTER 🪖・3D printing template to download・Cults
Shock Calvary & Tanks: Makers Cult 3d STL Files