KB3D NEXUS - The modular Gas Mask system: ReverseMount Module (Patreon)

The 6th module in the KB3D Modular Gasmask System refresh/standardisation. This modular system is now called NEXUS.

The Nexus is The Modular Gas Mask System. Built around a universal interface—dubbed The Insert—each module screws securely into the mask’s insert, allowing the function to be changed as required. The Insert is not included in this post.

This post contains the ReverseMount Module. Evil module which has a dildo attachment pointing inside the mask. As you screw the module the dildo is moved further into the mask. recommended high infill for the dildo mount

Available masks:

S10/FMJ-08 - Compatible

FM12 - FM12 only

MF11/FMJ05 - Compatible

GP5 - No compatible module

Last updated: July 2026