1st is full gun with bipod up---- Barrel can be extended, and it can be clipped too.
2nd is taking bipod off.
3rd is taking the barrel off.
4th is arranged parts.
I don't know if I should post it... It gets good range, it's functionable, and it takes 30 seconds to seperate, but you can build it from the pictures, probably.
I figured out that just the body can be used as a pistol, too!