Leaders in Machine Pistols: the Beistigui Hermanos MM31

Published on October 22, 2017
Duration: 15:13

This guide details the disassembly and internal comparison of the Beistigui Hermanos MM31 machine pistol, a Spanish variant of the Mauser C96. It covers safety checks, identification of markings, and highlights key internal differences like the pinned locking block, as presented by firearms expert Ian McCollum. This advanced procedure is crucial for understanding the nuances of this historical firearm.

Quick Summary

The Beistigui Hermanos MM31 is a Spanish selective-fire machine pistol, closely resembling the Mauser C96. Key internal differences include its pinned locking block, offering a more integrated design than the C96's loose block. It fires the 7.63mm Mauser cartridge and was produced in models featuring detachable 20-round magazines.

Chapters

  1. 00:00Introduction to the MM31
  2. 00:46Beistigui Hermanos Company History
  3. 02:02The Chinese Market for Machine Pistols
  4. 03:49MM31 Features and Improvements
  5. 05:13Magazine Evolution (10rd to 20rd Detachable)
  6. 07:08Markings and Provenance (Proof Marks, Year Code)
  7. 08:30Stock and Holster System
  8. 09:57Internal Comparison (Pinned vs. Loose Block)
  9. 12:00Market Decline and Company Pivot

Frequently Asked Questions

What is the Beistigui Hermanos MM31?

The Beistigui Hermanos MM31 is a Spanish-made selective-fire machine pistol, produced in Eibar, Spain. It is a high-quality clone of the Mauser C96 'Broomhandle', featuring several internal improvements and modifications.

What are the key internal differences between the MM31 and the Mauser C96?

A primary internal distinction is the MM31's pinned locking block, which is integrated into the receiver. This contrasts with the Mauser C96's loose locking block, offering a potentially more robust design in the MM31.

What caliber does the Beistigui Hermanos MM31 fire?

The Beistigui Hermanos MM31 fires the 7.63mm Mauser cartridge. This was a common caliber for Mauser C96 variants and their clones, chosen for its relatively high velocity and manageable recoil in pistol form.

When was the Beistigui Hermanos MM31 produced?

The specific MM31 examined in the video, identified by its 'H' year code, was produced in 1935. Beistigui Hermanos was founded in 1910, and the MM31 model was developed during a period when Spanish arms manufacturers found success exporting pistols.

More Gunsmithing & DIY Videos You Might Like

More from Forgotten Weapons

View all →