This Halloween, crafting most of your props and replicas wont be as easy as hitting “print.” This Mass Effect M-6 Carnifex Rubber Band Gun is the exception, though, and it’s all thanks to the detailed efforts of [eggfooyoung]. Like many others in childhood, [eggfooyoung] dreamed of sporting his own rubber-band gun. Year’s later, he’s made that dream a reality, and one for many others as well.

Mechanically, rubber-band guns, especially semi-automatic ones, are a finely tuned escapade into complex levers and joints. [eggfooyoung] took it upon himself to learn from the best in the craft, in this case, YouTube user [RBGuns] who has posted designes for numerous rubber band weapons. Overall, the M-6 Carnifex is a triumph of shared knowledge, as it’s an iteration of [RBGun’s] M9 build. [eggfooyoung’s] documentation is also everything we’d love to see in a weekend project: design files [PDF], detailed pictures documenting the step-by-step gluing process, and resources to dig more deeply into building your own rubber band guns.