Flie-Ing GOOse's semi-goose gun was one of the first K'nex guns I built, but I wasn't totally satisfied with it so I decided to do some nice, heavy modding. I turned pretty much the whole front half of the gun upside-down. It doesn't look as much like a real gun, but it works much better.
This is my first instructable, so bear with me.
Step 1: The Chamber
The bullet chamber is probably one of the most important aspects of the mod. I used two single-slot gray connectors with the tops cut off to add stability.
Step 2: The Trigger
The trigger design is pretty much the same, but it needed to be reinforced because I used a powerful rubber band that put too much stress on it.
Step 3: Handle and Butt Area
Not much to change here, just wanted to be thorough.
Step 4: Firing Pin and Rubber Band
This is easy.
Step 5: Finishing Up
That's pretty much it. Enjoy!