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MK IV Accurizing Kit Installation

Before We Begin

Warning!

Make sure firearm is unloaded before performing any work!

Please note that by installing the Volquartsen MK IV Accurizing kit, the factory magazine disconnect (parts 19 and 45 in the Ruger® schematic) will be removed. This will allow the pistol to fire without having a magazine inserted. It is the customer's responsibility to inform anyone using this pistol of this modification.

Tools Needed

Notes

Disassembly

Step 1

Remove the upper from the frame. Refer to the Ruger® manual if you need assistance.

Step 2

MK IV Frame

Using a 3/32" Allen wrench, remove the grips from both sides of the frame. There are two screws in each side.

Optional Step 2a

MK IV Frame right side

While the grips are off, it's common to accidentally knock the Magazine Ejector out of the frame. You may choose to remove it now and set it aside.

To remove it, simply lift on the bottom of the magazine ejector. Be careful not to lose the spring and plunger that come out the top of the ejector.

Optional Step 2b

MK IV Frame

It's also common for the bolt stop thumbpiece (part 30) fall off the frame. You may choose to remove it now and set it aside.

To remove it, grasp the thumbpiece and lift up while wiggling the part slightly. Once the rear of the thumbpiece is lifted clear of the screw, slide it rearward and it'll come right off.

Step 3

MK IV Frame

Take a moment to take a look at some of the details of your frame now, so that things look a little more familiar when it's time to reassemble.

Step 4

Step 5

MK IV Frame
  1. Using the 1/16" Allen wrench, remove the screw that secures the safety lever (part 23) on the right side of the frame.
  2. Remove the safety lever from the right side of the frame. You may need to use a small screwdriver to carefully pry the lever loose.

Step 6

MK IV Frame

Step 7

MK IV Frame

Remove the hammer (part 17) and magazine disconnect assembly (part 14) from the frame by pulling them straight out the top of the frame.

Step 8

Step 9

MK IV Frame

Using the 1/8" punch, tap out the sear pivot pin (part 37). Once this pin is out, the sear (part 14) and sear spring (part 15) will be loose and should be removed from the frame.

Step 10

MK IV Frame
  1. Using a 1/8" punch, tap out the trigger pin (part 10).
  2. Remove the trigger (part 43), trigger spring (part 5), trigger plunger (part 6), trigger bar (part 9), bolt open stop (part 7), and trigger retaining spring (part 40).

Installation and Assembly

Step 1

MK IV Frame

Step 2

MK IV Frame

Step 3

MK IV Frame

Step 4

MK IV Frame

Step 5

MK IV Frame

Step 6

MK IV Frame

Step 7

MK IV Frame

Step 8

MK IV Frame

Step 9

MK IV Frame

Install the right safety lever (part 23) and reinstall the screw.

Step 10

MK IV Frame

Reinstall the bolt stop thumbpiece (30) by sliding the forked end over the

stud of the bolt open stop (part 7) then pushing the hole on the other end over the screw.

Step 11

MK IV Frame right side

Reinstall the magazine ejector by sliding it into the recess in the frame.

Step 12

MK IV Frame

Reinstall the grips on both sides of the pistol.

Step 13

Step 14

Safety Check

©2019 Volquartsen Firearms
All serial numbered items must be shipped to an FFL dealer.
Contact webmaster@volquartsen.com with website issues or suggestions.
10/22, 22/45, Mark III, and MK IV are registered trademarks of Sturm, Ruger & Co., Inc.

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