Firearm Maintenance: Ruger Mark I,II,III Reassembly - Part 4/4

Published on July 25, 2014
Duration: 2:23

This guide details the reassembly of Ruger Mark I, II, and III pistols, presented by a Brownells Gunsmith. It covers grip installation, receiver and frame alignment, bolt and recoil spring assembly, specific hammer positioning for the Mark III, mainspring housing installation, and crucial troubleshooting for hammer strut misalignment. The video emphasizes a methodical approach, utilizing specialized tools for precise component seating and alignment, concluding with a vital function and safety check.

Quick Summary

Reassembling Ruger Mark I, II, and III pistols involves careful alignment of components. Key steps include seating the receiver onto the grip frame, correctly installing the bolt and recoil spring, and ensuring the hammer strut aligns with the mainspring housing plunger. The Mark III has a specific procedure for dropping the hammer using an empty magazine and trigger pull. Always perform a function and safety check post-assembly.

Chapters

  1. 00:00Introduction and Grip Installation
  2. 00:11Receiver and Frame Alignment
  3. 00:29Bolt and Recoil Spring Assembly
  4. 00:42Hammer Positioning (Mark III Specific)
  5. 00:53Mainspring Housing Installation
  6. 01:19Troubleshooting and Function Test

Frequently Asked Questions

How do you reassemble the receiver onto the grip frame of a Ruger Mark pistol?

Align the receiver with the lug on the grip frame and push forward until it stops. A nylon-faced hammer may be used to gently tap it fully into place if needed. Ensure the hammer is cocked before proceeding.

What is a common issue during Ruger Mark III reassembly, and how is it fixed?

A common issue is the hammer strut misaligning with the mainspring housing plunger. If the bolt won't move rearward, unlatch the housing and re-check the strut alignment before continuing assembly.

What special step is required for the Mark III hammer during reassembly?

For the Mark III, after inserting an empty magazine, point the pistol downward and pull the trigger to allow the hammer to fall forward. A screwdriver might be necessary to assist gravity in this step.

What tools are recommended for reassembling a Ruger Mark pistol?

Essential tools include a screwdriver for grip installation and potentially assisting with the hammer. A nylon-faced hammer is recommended for gently seating the receiver onto the grip frame without causing damage.

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