The reason why I made this a part one is because I am in the current production of my next gun, the (SPOILER ALERT)
~~~ APS Underwater Assault rifle ~~~
Part 2 will come out after the next gun.
Step 1: Magazine
The rectangle thingy you put into the handle to make the thing shoot.
Step 2: Handle
NOTE*** at the step after you put the light grew studs on the side of the handle, the is a picture for the next step. That step is the curve for the back of the handle.