WARNING:
People have complained about issues with the assembly difficulty which I was not aware of, so I advise you all that the model is far from assembly friendly, and to assemble such model takes a lot of mechanical knowledge and experience.
This is also my first time working with such mechanical systems so dont waste filament on this if you are hoping for an easy, straight forward assembly
Thanks for understanding
Shell ejecting parts included in this link:
https://www.printables.com/model/1025601-toy-glock-26-blowback-shell-ejecting-v1
Assembly tutorial: (just dial the quality of the video up a bit if it's too blurry)
The author marked this model as their own original creation.