MPA930T - My Modern MAC-11

Published on January 14, 2022
Duration: 14:13

This guide details the modification and repair process for a Masterpiece Arms MPA930T, transforming it into a modern, tactical firearm. It covers the installation of 3D printed accessories like a rear brace and custom shroud, mounting optics and lights, and addressing common internal failures such as a broken disconnector/hammer. The guide emphasizes DIY gunsmithing techniques for enhancing ergonomics and functionality.

Quick Summary

The Masterpiece Arms MPA930T can be modernized with 3D printed accessories like a custom barrel shroud for lights and a rear cap for a folding brace and optics. Internal repairs often involve replacing a broken disconnector/hammer, and Sten-style magazines can be modified for better reliability or compactness.

Chapters

  1. 00:00Introduction to the MPA930T
  2. 00:30Masterpiece Arms Product Lineup
  3. 03:00Front-End Modifications
  4. 03:45Rear Brace and Optics Mounting
  5. 09:00Internal Issues and Trigger Slap
  6. 10:35Magazine Compatibility

Frequently Asked Questions

What are the key modifications for a Masterpiece Arms MPA930T?

Key modifications include adding a custom 3D printed barrel shroud with a Picatinny rail for lights, a 3D printed back cap for a folding brace and optics mount, and potentially replacing internal parts like the disconnector/hammer for reliability.

How can the ergonomics of an MPA930T be improved?

Ergonomics can be improved by adding a 3D printed back cap to mount a folding brace, and by installing a Swampfox reflex sight on an optics rail for faster target acquisition. A custom trigger shoe can also mitigate trigger sting.

What internal issues are common with older MPA MAC-style firearms?

A common failure point in older MPA MAC-style firearms is a broken internal disconnector/hammer, often a result of designs intended to reduce trigger slap. Replacing this with a solid part is a frequent repair.

What magazines does the MPA930T use, and what are the options?

The MPA930T uses Sten-style magazines. Reliable options include 20-round single-stack conversions, and custom-shortened magazines can be developed for a more compact profile.

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