Brownells - Installing a main spring housing/mag well on a 1911

Published on April 17, 2010
Duration: 1:57

This guide details the process of installing a new mainspring housing and mag well on a 1911 pistol, as demonstrated by Mike Watkins, a Technical Services/Pistolsmith at Brownells and member of the American Pistolsmiths Guild. The procedure involves disassembling the old housing's internal components, transferring them to the new unit, and carefully reassembling it into the firearm frame. Proper tool usage and function checks are emphasized for a successful installation.

Quick Summary

Installing a 1911 mainspring housing and mag well involves carefully disassembling the old unit's internal components, transferring them to the new housing, and then reassembling the new unit into the firearm frame. Essential tools include various punches, a vise, and a bench block. A final function check is crucial to ensure proper operation of the hammer and grip safety.

Chapters

  1. 00:00Introduction to 1911 Customization
  2. 00:20Required Tools for Installation
  3. 00:43Removing the Old Housing
  4. 01:00Disassembling Internal Components
  5. 01:18Reassembly and Installation
  6. 01:49Final Checks and Fitting

Frequently Asked Questions

What tools are needed to install a 1911 mainspring housing and mag well?

You will need a 3/16" punch or a Brownells Mainspring Housing Pin Pusher, a 1/4" punch for spring compression, a 1/16" punch for the cap pin, a padded bench vise, a brass hammer, and a bench block.

Do new 1911 mainspring housings come with internal parts?

Typically, new mainspring housings for the 1911 do not include the internal components such as the mainspring, cap, cap pin, and retainer. These parts must be carefully salvaged from the original housing and transferred to the new one.

How do I ensure the mainspring housing is correctly installed on a 1911?

After installation, perform a function check. Ensure the hammer has proper tension and the grip safety moves freely and engages correctly. Some firearm and part combinations might require minor fitting.

Can I install a mag well on my 1911 mainspring housing?

Yes, many aftermarket mainspring housings are designed to incorporate an extended magazine well, also known as a mag funnel. This modification enhances the speed and reliability of magazine changes.

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