I designed a lighted rail for norf guns. It fits on the normal nerf adapter.
It just looks cool but does not "tune" your gun ;-)
You will Need to print pt03 two times.
I added a space for 4 AA batteries.
What you need:
a cool NERF gun
12 LEDs
Resistor for 6V depending on your type of connection
https://www.amazon.com/Battery-Spring-Holder-Plastic-Stacked/dp/B00VUM5KX4/ref=sr_1_4?ie=UTF8&qid=1504447393&sr=8-4&keywords=4x+aa+batteries+case
https://www.amazon.com/Pin-Mini-SPST-Rocker-Switch/dp/B01N2RA6KB/ref=sr_1_9?s=industrial&ie=UTF8&qid=1504447466&sr=1-9&keywords=switch+black+13
some wires to connect it.
M3 nut
M3 countersunk head screw
4x AA batterie
some time to connect it
The most other parts you see on the Picture are from the "stryfe hulker kit" by blasterforgePH.
If you got any suggestions or questions, please let me know.
Hope you enjoy it.