AAP-01C threaded barrel adapter

This is a simple 14mm CCW threaded barrel adapter for the stock AAP-01C barrel.

Installation:
- Unscrew the two screws at the bottom rail of the outer barrel.
- Use the hex key/scerwdriver to push out the rubber piece out of the outer barrel.
- (if it doesn't work, you can do a full disassembly to more easily remove the rubber piece)
- Push the 3D printed adapter back in.
- Screw the two screws back in.

EDIT:
Added 45° version for better layer line orinetation on the threaded part.