Lenny Magill and the MBX Steel Magazines for Glocks

Published on April 22, 2020
Duration: 21:01

Lenny Magill reviews MBX all-steel magazines for Glock handguns, detailing various lengths and capacities suitable for competition. He covers 140mm, 155mm, and 170mm options, noting standard and competition follower differences affecting capacity and slide lock. The review also highlights MBX extensions for factory 33-round magazines, increasing capacity to 57 rounds for PCC matches, and advises on potential magazine release wear.

Quick Summary

MBX offers steel magazines for Glocks in 140mm (23/24 rounds), 155mm (26/27 rounds), and 170mm (29/30 rounds). Extensions can bring a 33-round factory mag to 57 rounds total. Steel mags may wear plastic releases, so aluminum/steel replacements are advised.

Chapters

  1. 00:00Intro: MBX Steel Glock Magazines
  2. 02:07MBX 140mm Magazine & Follower Options
  3. 04:02MBX 155mm & 170mm Competition Mags
  4. 05:06Competition Compliance & Mag Release Wear
  5. 08:31MBX Extensions for 'Big Stick' Mags
  6. 10:15Installing MBX Magazine Extensions

Frequently Asked Questions

What are the different lengths and capacities of MBX steel magazines for Glocks?

MBX offers steel magazines in 140mm (23/24 rounds), 155mm (26/27 rounds), and 170mm (29/30 rounds). Extensions can bring a 33-round factory mag to 57 rounds total.

Do MBX steel magazines affect Glock magazine releases?

Yes, the harder steel material can cause wear on factory plastic Glock magazine releases over time. It's recommended to use an aluminum or steel replacement magazine release.

What is the difference between standard and competition followers in MBX magazines?

Standard followers typically lock the slide back on the last round fired, while competition followers allow for an extra round of capacity but do not lock the slide back.

Are MBX steel magazines legal for competition?

Yes, the 155mm and 170mm MBX magazines are specifically designed and measured to comply with USPSA and IPSC rules for Production, Carry Optics, and Open classes.

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