The file 'Armoured Half Track Rocket Launcher 3D Printer Model' is (stl) file type, size is 1.4MB.
An armoured rocket launcher similar to the German Vielfachwerfer (of which more in another post.
This excellent design is by Thingiverse member lolo29.
Mined from 3D warehouse cleaned up for your printing pleasure
rocket_launcher.stl | 3.0MB |