Step 1: Who made this gun?
1: Meme's SPAS-12. Modded a little for comfort and yellow connectors.
2: AUG-50M3's SPAS-12. In metallic colors, and with an moving pump!
Step 2: Build every part.
There are paint pictures for some big parts
The lines that stick out in the paint pictures, are slots where a rod can click in. Rods are marked with a circel in the colour of the rod.
Paint1: Upper long part of photo
Paint2: Lower long part of photo
Paint 3: handle
Paint 4: part in top left corner