Sig P365X 10 to 12 Round Magazine Baseplate Extension 3D printable model by Scheer

Sig P365X 10 to 12 Round Magazine Baseplate Extension

Source: MakerWorld by Scheer

The Sig P365X 10 to 12 Round Magazine Baseplate Extension is a free printable 3D model from MakerWorld by Scheer. This is a baseplate for Sig P365 magazines to extend them to fit into P365X grip modules. You can download the STL file from the original listing below and print it at home.

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133 saves Source: MakerWorld Updated 2026-09-27 License: CC-BY-NC · non-commercial Category: Outdoor & Garden

Tags: p365, p365x, sig sauer, magazine, p356xl

About this model

This is a baseplate for Sig P365 magazines to extend them to fit into P365X grip modules. It does not add any capacity, they remain at 10 rounds, just extends the body length so they can be inserted into the P365X which is intended to be a 12 round firearm. Perfect for anyone who converted from a P365 to a P365X and wants to still use the 10 round magazines for practice. PLEASE PLEASE PLEASE do not carry for self defense while using this piece, while I have yet to break one in normal use you would never want to trust your life to a printed piece of plastic. This is just meant for range use.

Frequently asked questions

Is this 3D model free to download?
Yes. Sig P365X 10 to 12 Round Magazine Baseplate Extension is free to download from MakerWorld. Open it in the free Thinger app, or use the "Download from MakerWorld" link above to open the original listing.
Where is the STL hosted?
The download is hosted by MakerWorld, not by Thinger. We link you directly to the original listing by Scheer.
Who made this model?
Designed by Scheer, published on MakerWorld. Please credit the creator when sharing your print online.
Can I print this at home?
Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.

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