These are the pieces you will need to make the gun:
Step 2: First Step
This is a magor part of the gun and will need to fit together like so
Step 3: Body
You will then need the two bent black pieces, the little black two piece,the long grey piece, and long and thin cross piece. The short blue piece and two small black pieces.but leave the long bent black piece that's on the right off. We will put it back on later.
Step 4: Catch
The blue piece will need to be cut like so. You can then fit them together. Then put a short blue piece through the hole in the black piece.