Rifle mechanism

I want to make another gun (https://youtu.be/kzh-1hUooik - by RBguns), but instead of making the "difficult parts" in wood, I choose to convert them into 3D printed parts.

28 jan 2018: Tried the assembly today. It works! Some improvements though and update of allmost all parts.
1. Most important: Pins in BasePlate and TopPlate alongside the rotor have to be removed.
Another attention point: have a strong band on the Cock, it has to bang the Slider hard in order to release a rubber band from