Rotating Rail system for airsoft.
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I want to make the handguard/rail system on my m4 rotatable so I can add night vision as well as a scope and a red dot. My plan Is to have the guard itself rotate around the barrel with a 3D printed part, I have no idea what the term is but essentially it's a ball bearing that clicks and locks in place with each turn. I have an anycubic kobra 2 max and two ender 3s. I use cura and blender. Thank you for any help!