Built my first Lego gun. The parts beside it is the bullet, rubber charge and the parts for the top of the gun.
Gun is shown loaded in this second image. The rubber band around the front and along the barrel to the two wheels at the back. The bullet in the barrel and then the covers on top.
Final image with gun ready. It is fired by pulling the black axis out on the side.
For next build i will focus on getting a trigger working and also a better way to reload.