Here’s some shots of the phaser barrel for the “Cage” version I machined up, made from brass and aliminum
an animation of the barrel functions can be seen here https://youtu.be/RVipywxXfwk
The screws arent right but It’s all I had. But theryre screws so they come out and can be changed no big deal
The centre ring slides up and down the barrel
And the rear section can be unlocked and to slide out.