Summary

The model could be printed on an FDM printer.

There are two version:

1_piece - merges the vehicle and the hex base into one model (some blocks are added so it could be printed)
2_pieces - the vehicle and the hex base are separated (needs to be glued together)

Add a raft and supports when slicing the model.

The hex base is a remix from https://www.thingiverse.com/thing:6702468, kudos to
Warn-A-Brotha97.

Print Settings

Printer Brand:

Creality

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>Ender 2</p></div></p>                                                                                <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>Yes</p></div></p>                                                                                <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>Yes</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>0.1</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>100</p></div></p>                                                    <strong>Filament:</strong> Ender PLA+                white

How I Designed This

Tinkercad

6mm armoured rocket launcher (for FDM printer)