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M12 | Shotgun Prop 3D Printer File Image 1
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M12 | Shotgun Prop

Vissidus avatarVissidus

April 25, 2026

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Description

Introducing the M12: a new, fairly modular 12 gauge shotgun. Combining with highly detailed parts and functional assembly, this models offers the experience of handling a weapon and shotgun building experience.

This model consists of 83 individual components, providing realistic detail and rewarding assembly process. Be it for cosplay, a prop collection, or just funsies, the M12 offers an authentic and well built system.

Boost MeA token of appreciation if you like this model 🎖️🏆MembershipThis is a way to support my work, to help me continue creating more models, and allow you to make adaptations of your own Your support is a tremendous push to keep doing what I enjoy most and share my efforts with you.

 

- Features -

Modular design: featuring replaceable firing unit, forend, barrel and more
Functional Mechanisms:

  • Actuated safety switch, trigger and hammer
  • Reciprocating bolt and shell lifter
  • Swappable buttstock pads
  • Compatibility with underbarrel mounting
  • Chambering and extraction (manual load only)

Safety Features:

  • Plugged (solid) barrel and magazine tube
  • No firing pin channel (or space for it)
  • No channel for striking hammer
  • Hammer is used for audible and tactile feeback only

Customization:

The model is highly customizable with all parts replaceable, including the receiver, barrel and magazine tube, handgrip, sights, forend and more, to truly allow you to make this shotgun your own.

Attachments and upgrades, such as dummy red dot sights, flashlights and more are available HERE, expanding the possibilities of your build.

 

12 gauge shells included: comes with inert 12 gauge 2-¾" ammunition
Accessories: comes with a fixed iron sights, a picatinny mounted shell carrier and a sling mount


- Instructions -

Assembly and Fitting:

Required tools:

  • S1.5/2.5/3 Hex Key
  • Pliers/7mm Socket
  • 2-150mm Steel Punch
  • Mallet/Hammer

Required consumables:

  • Acrylate glue/2-part epoxy

Included step-by-step instruction for all modules. Easy to follow, full of visual ques and text instructions.
Compatibility:
Compatible with 2-½" up to 3" 12 gauge shells that meet the SAAPI dimnesional specifications
Compatible with picatinny rail and M-LOK accessories


- Support -

Contact:
If you encounter any issues with printing, assembly, etc., please leave a comment below or email me at: [email protected]
-or join my discord channel
I'll do my best to help you resolve any and all issues I can

If you've printed the model and enjoyed playing with it, a follow and a like would be greatly appreciated!

 

Disclaimer: the Author assumes no responsibility or liability for any misuse and damage caused by the contents of this publication. The model and individual parts contained in this publication are not intended to be used to perpetrate any illegal activity.
Under no circumstances shall the Author of this model and publication be liable for any alterations made to the contents of this publication by any party aimed to construct a firearm.

License:

MakerWorld Exclusive License

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