S&W M&P 15-22 Brass Catcher

M&P 15-22 Brass Catcher by Polymera
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updated March 16, 2025

Description

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Please the Brass Goblins with the Polymera mount-on shell casing catcher! Includes files for both Magnetized or Standard Door Plug variants.

This model is specific for the M&P 15-22 carabine, but don't worry. More models are coming for more platforms so stay tuned. 

 

V1: modified the shape of the brass collector to accomodate for the larger brass deflector used in more modern models of the M&P 15-22. Magnetized version to be added in the coming future. 

 

This project was commissioned by: @themindboggler
Feel free to reach out to request a design!

 

The ergonomic design allows to shooter to use the rifle the way he's used to as well as comfortably reach the Mag Release Button and can be mounted underneath an optic without interfering with the scope rings.

 

Some fit and finish may be required during the Assembly. Requires Support Structures.

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Parts List:

  • DIN 7991 M4x30 Screw (x2)
  • M4 Nuts (x2)
  • Ø6x3mm Magnets (x4) - For Magnetized Version
  • 3D Printed Components (Part 1, 2, 3)
  • CA Glue to fix magnets in place

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