3D Mechanical Lock Unlock System Design

Dear Freelancer:

This is a small connector system that needs to be designed.
It consists of PARTA (key) and PARTB + PART C (socket/connector)

--> How to assemble?:
PARTB needs to be firmly clicked inside PARTC
PARTA metal part is screwed onto its base

--> What is the functionality?:
#LOCK
When putting PARTA inside the socket (PARTB+PARTC)
and than turn it 90 degrees clockwise PART A is locked
#UNLOCK
When turning PARTA counter-clockwise and than pulling it
out, PARTA is free and outside the lock

--> What is the difficulty of this project?
The functional part: the tooth of the key part really need to be able to turn inside
the socket for 90degrees and firmly locked inside (so need to add realistic functionality)

--> What will the contest holder provide?
A dwg file with a reference PART C will be provided to the freelancer

-->What are the materials used?
PARTA
Grey part is metal
Black part is plastic
PART B
Made of plastic
PART C
Made of rubber

--> How to deliver?
Full 3D design in AUTOCAD (or SOLIDWORKS) original format
and 2D component printouts with dimensions

Only CAD Mechanical Engineering designers suitable for this project!

Thanks.