Parts for 3D Printed 15-22 Han Solo(BLASTER)

[Airrage]

I bought my original M&P 15-22 many many years ago. I dont shoot it much but got into 3D printing. I was looking for stuff to print and noticed stuff for the 15-22 Mags and printed those so i figure i try to print out a lower which came out beautiful. I also noticed people make Han Solo gun "BLASTER" out of them so was looking to try to do something like that. Has anyone done this yet here and direct me to the right site for parts and how too?
Here is the link of what im trying to do!
Functional Star Wars Blaster: Han Shot First and You Can, Too -The Firearm Blog