I am going away for the next couple of years, so I wasn't able to make an assembly guide and a gameplay video like I normally do.
In addition to the 3D printed parts, you'll need to buy the following:
1 - Some of this pipe to make the barrel - https://www.lowes.com/pd/3-in-x-10-ft-Corrugated-Solid-Pipe/3221923
2 - one of these ½ inch steel rods to make up the trigger rod - https://www.lowes.com/pd/Hillman-1-2-in-W-x-4-ft-L-Plain-Hot-Rolled-Steel-Weldable-Square-Tube/3055603
3 - A spring for the firing pin
4 - A 5mm rod for the firing pin arm, like this - https://www.amazon.com/uxcell-250mm-Stainless-Steel-Solid/dp/B082ZNJR7D/ref=sr_1_3?crid=1H6L6M2K40AS7&keywords=5mm+rods&qid=1694998466&sprefix=5mm+rod%2Caps%2C214&sr=8-3
If you want to design your own cartridges for this launcher, for shooting different projectiles and whatnot, the dimensions are here:
I'm sorry that this is rushed and messy
The author marked this model as their own original creation.