Assault Phaser Host with Swapable Diode Cartridges

I'm planning a TOS Phaser for my first real build. My dad is in his 60s and is a HUGE Trek fan. He has always wanted a "real" Phaser so I want to give him one made from a Wand.

However, I want my own, thought I'd just make another TOS.

Then I seen this...
https://www.youtube.com/watch?v=yIQ5B59U8b8