***This is an outdated model***
The new version can be found here:
https://www.printables.com/model/932744

I have spent a few years iterating this project. Finally it is reliable and fairly simple. This rubber band gun shoots bands from a MAGAZINE. It uses small “rainbow loom” bands, which allows the design to be compact. Unlike other repeaters or gatling guns, this mag fed gun stores its ammo unstretched. This allows multiple mags to be loaded for long periods of time without the worry of bands breaking due to fatiguing rubber. While other designs change trigger pull weight or cocking force with each shot, this one stretches just one band at a time giving a consistent racking experience. There is a hollow grip for convenient band storage and an access port in the slide for monitoring, and clearing jams.
A full demo and assembly video can be found here:
https://www.youtube.com/watch?v=B9_oLZ1OBtQ
Skill level:
Intermediate. This project requires intermediate knowledge of your slicer, E.g. support blocking and seam placement. The cleanup and assembly is straightforward.
Tools:
X Acto and/or utility knife
Sandpaper and/or file
Pliers or flush cutters for support removal
Screwdrivers and or Allen keys for hardware
Materials:
PLA or other stiff filament
Two M3 x 20mm machine screw
One M3 x 14mm machine screw
Two pen springs, just under 5mm OD.
Two 5x5x2.5mm Magnets
60mm of 1.75mm Filament for sliding pins
Super Glue
15mm wide or narrower thin double sided tape(or just glue)
Rubber Bands!
Dimensions:
Gun. 180mm x 124mm x 32mm.
Mag.122mm x 35mm x 7mm.
P.S. I have no idea if the picatinny rail is functional. It it based on dimensions from online and I have never tried it. Please tell me if it works!


Mag Fed Mini Rubber Band Gun

Back Hook.stl

Door.stl

Front Hook.stl

Grip.stl

Hook Cap.stl

Insert.stl

Mag Hooks.stl

Mag Release.stl

Mag Track.stl

Pins.stl

Slide Cover.stl

Slide.stl

Trigger.stl

**Rubber Band Guns!** And accessories. I hope to create more models and build out an arsenal!

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