Kythera m4 project

M4 with kythera was a project but due to lack of time no longer interested in hpa.

I rebuilt the gearbox a bit to get the engine in, took out the select fire and sprayed some parts camo.

It is stuck on single shot (after every shot you have to pull the rope), unfortunately my knowledge is not enough to get it back to semi.

What do you get, the original kythera box with parts of both the engine and dem4 itself. Polarstar hose and regulator. Falcons 0.4l tank. Adjustable scope and red dot. 4 bags of 0.40 gram bb's, 1 bag of 0.36 gram bb's.