Action & Trigger Components


29-mkii-mkiii-trigger 502-od-green-frame-with-volthane-grips 550-extended-bolt 170-mkii-mkiii-black-extended-bolt-release 385-bolt-tune-up-kit 434-mkiii-extended-safety 600-stainless-mainspring-housing 568-frame-colors 15-mkii-mkiii-target-sear

Extended Magazine Release for MKII


Provides extended length over the factory magazine release for faster, easier magazine changes. It is designed to work with oversized target style grips. Drop-in part that requires no gunsmithing. This magazine release is CNC-machined from 416 stainless steel billet material. No casting!! Fits Ruger MKII only.

Extended Magazine Release for MKIII


The MKIII Extended Magazine Release is an 1/8" longer than the factory release providing easier access. This release has also been modified to improve insertion of the factory magazines.


  • CNC Machined from stainless
  • Designed for the Ruger MKIII steel frame

Extended Safety for MKII, MKIII or MKIII 22/45


The Extended Safety provides the shooter improved access to the safety on the Ruger MKII, MKII 22/45, MKIII and MKIII 22/45 pistol. The Extended Safety is the perfect addition when being used with target grips. The contour is wire EDM precision cut from 17-4 stainless steel. The Extended Safety is .150" longer than the factory button. Comes complete with safety detent and spring.

Please note that the Ruger MKII 22/45 requires a different safety and is available in black only.

Extended Bolt Release for MKII and MKIII


Replaces the factory bolt release in minutes and provides the shooter with a .375" serrated face for an easier release of the bolt. Fits both the Ruger MKII and MKIII. Not compatible with the 22/45.

VC Mainspring for Ruger Pistols


Complete mainspring assembly designed for the Ruger MKII or MKIII. Mainspring components are wire EDM-cut and CNC-machined.

Our mainspring does not feature the lock feature found on the Ruger factory MKIII Mainspring.


  • Models available for either the Ruger MKII/MKIII or the 22/45
  • 2oz base weight

Target Sear for MKII and MKIII


This specially designed sear provides the shooter with a shorter, faster, cleaner breaking trigger pull. The sear is wire EDM-cut from hardened A2 tool steel. Fits Ruger MKII, MKIII and 22/45.

Competition Bolt for Ruger MKII or MKIII


Are you a competitive shooter looking to eliminate stovepipes, failures to fire and improve the overall performance of your Ruger MKII or MKIII pistol? The Competition Bolt is the answer!

The Competition Bolt is CNC-machined and ground for superior tolerances, fit and finish. It features an Exact Edge Extractor as well as the SureStrike Firing Pin.

The Competition Bolt has an integral Extended Bolt Racker to allow for improved manual cycling of the bolt – no more pinched fingers!


  • Available in either a black nitride or silver hard chrome finish
  • 4oz base weight

CNC-Machined Disconnector for MKII and MKIII


Our CNC-Machined Disconnector is CNC-machined from 416 stainless steel. The machining process allows us to make several design changes to the the way the disconnector functions. We have added material that increases rigidity over the current design. This increased rigidity not only improves trigger pull but also will improve overall functioning as it will prevent any binding or interference that can be found on the prior design and factory design. This is due, in part, to variances in the factory frame tolerances.

The CNC-machined design also features an integral pin without the step found on the factory design. We have also machined the pin that comes in contact with the trigger plunge … (more details).

Spring-Loaded Magazine Ejector for 22/45


Our Spring-Loaded Magazine Ejector for the Ruger 22/45 will improve the mag drop of the factory magazine. Its unique design uses spring pressure to forcefully remove the magazine from the grip frame. The innovative design not only aids in magazine removal but also adds an extension to the bottom of the magazine to make magazine reloads quick and reliable every time.

The ejector is CNC-machined from an aluminum alloy and black hard anodized. Also features a CNC-machined stainless steel button for increased durability.

Simply remove the magazine floor plate from a factory 22/45 magazine and replace with this ejector for an enhanced shooting experience!

Target Trigger for MKII and MKIII


CNC-machined Target Trigger features both pretravel and overtravel adjustments.

Bolt Tune-Up Kit for MKI, MKII and MKIII


The Volquartsen Bolt Tune-Up Kit for the Ruger MKI, MKII and MKIII target pistols contains one of our most popular items ever, the Exact Edge Extractor and our SureStrike Firing Pin.

This kit is designed to eliminate light hits and stovepipes.

Accurizing Kit


Complete drop-in kit comes complete with Target Hammer, Target Sear, Target Trigger (available in either black hard anodized aluminum or optional stainless steel), Extended Bolt Release and Trigger Return Spring with Polished Plunger. The trigger features adjustable pretravel and overtravel screws.

The Accurizing Kit combines all of the internal components needed for that crisp, clean 2.25lb trigger pull the discriminating shooter is looking for. No stoning or fitting required. Final trigger pull may vary slightly due to factory frame variances.


  • Accurizing Kits fit the Ruger MKII, MKIII and all variations of the 22/45 (extended bolt release and sear spring are not used when installing in a 22/45).
  • MKII Kit also includes a MKII Hammer Bushing and can be used in the MKIII in order to eliminate the magazine disconnect.
  • The color option applies only to the Extended Bolt Release.

Target Hammer for MKII and MKIII


The MKII and MKIII Target Hammer is a complete drop-in item that is wire EDM-cut from hardened tool steel. The target hammer will not only reduce your trigger pull but will also improve lock time. Fits MKII, MKIII, and 22/45

Hammer Bushing for MKII


MKII Hammer Bushing manufactured by screw machine equipment. The hammer pivot pinhole has been drilled and reamed for improved precision to help eliminate variances that can be found in the factory bushing. Black oxide finish and hardened.

This bushing is compatible with a MKII Hammer only. It can be used in conjunction with a MKII Hammer to eliminate the magazine disconnect in the MKIII pistol.

Cross Reference


VC Target Frame


The VC Target Frame is CNC-machined from aluminum alloy. It is a complete frame with the following features: Accurizing Kit (includes Extended Bolt Release, CNC-machined Target Trigger, wire EDM-cut Target Hammer and Target Sear), CNC-Machined Disconnector, Built-in Spring-Loaded Magazine Ejector (MKIII model only) and Extended Safety. The VC Frame is shipped with a clean, crisp 2.25lb trigger pull. The magazine disconnect has also been eliminated from this frame.

The VC Target Frame is available in two grip angle configurations. Several grip options are also available: Volthane Target Grips (MKIII style only), Laminated Wood Target Grips (MKIII style only), Aluminum Grips or the Ho … (more details).

Spring Kit for MKI, MKII, and MKIII


Reduced power trigger plunger and mainspring. Also includes assembly pin for ease of installation on the mainspring. Fits Ruger MKI, MKII, MKIII and 22/45.

Want us to install the mainspring into the mainspring housing latch? Add our VC2SK-Install to your order.


  • Mainspring installation may require gunsmithing

SureStrike Firing Pin for MKI, MKII, and MKIII


Volquartsen SureStrike Firing Pin is designed to minimize and/or eliminate light hits on the Ruger MKI, MKII and MKIII (including 22/45) pistol. The SureStrike Firing Pin is precision EDM machined from A2 tool steel. The impact section of the firing pin is then surface ground to create the optimal “SureStrike” each and every time!

This new firing pin is also .004" wider than the factory firing pin to help eliminate side to side movement in the factory bolt.

Hardened to a Rc 56-58 to prevent any excessive wear and deformation that can be found on the factory firing pin. The hardening process on the A2 material allows for a much deeper hardening when compared to conventional cas … (more details).

Gun Guide for MKIII


Complete disassembly & reassembly guide for the Ruger MKIII pistol (includes the Standard, Target Gov’t Target, Competition, Hunter and 22/45 Models). This book features 19 pages & 36 high-resolution grayscale images. This is the perfect tool for those customers looking for a little more information when performing aftermarket part installations or general maintenance on their Ruger MKIII.

Gun Guide for MKII


RUGER .22 Automatic Pistols 1947 ~ 2004
For your Ruger Standard, Mark I, Mark II, 22/45, Competition, Government, Slab-sides and all special models prior to the release of the new Mark III series introduced in 2005.
So, you decided to disassemble your Mark pistol and now YOU CAN’T GET IT BACK TOGETHER AGAIN!


  • The only CURRENT printed manual that includes information on
    ALL models from 1947 ~ 2004 (Mark I, Mark II, 22/45, etc.)
  • Contains most of the same text and high resolution graphics
    found in the CD-ROM program
  • Easy to use — lies open and flat on your work surface
  • 56 pages – 55 high-resolution grayscale images
  • Includes "rare … (more details).

Posi-Lock Bolt Latch for MKII and MKIII


Are you tired of having to replace your factory bolt hold open latch? Our new Posi-Lock Bolt Hold Open Latch has been engineered to withstand years of use for even the most demanding shooter.

Manufactured from hardened A2 tool steel this latch contacts the bolt in a more effective way in order to ensure the bolt locks open on each and every empty magazine.


  • Fits both the Ruger MKII and MKIII pistols (does not fit the 22/45 model)

Cross Reference

Replaces Ruger Part #AN-37

17 Mach2 Pistol Conversion


Looking to improve the capabilities of your Ruger MKII or Ruger MKIII pistol? Our Mach2 pistol conversion unit may be just what you are looking for. Simply drop in the Volquartsen Mach2 pistol conversion unit and transform your 22 LR pistol into a 17 Mach2. Our barreled action features a CNC-machined stainless steel receiver, match, digitally-gauged 8" barrel and a fully machined alloy bolt. There are no other modifications needed! The conversion is then fitted with a Weaver style scope mount for mounting the scope or red dot optic of your choice.

The Mach2 Pistol Conversion includes barreled receiver, bolt and mount. Factory frame and mainspring required to complete pistol build. … (more details).

Install MKII or MKIII Accurizing Kit or Pistol Competition Kit

Volquartsen will professionally install your Accurizing Kit or Pistol Competition Kit. There is no need to take it to a gunsmith, simply send us your frame and it will generally be on its way back to you in 10-14 days.

LLV Competition Pistol Upper


The LLV barreled receiver has been completely redesigned. A great design has been made even better – better balance, more versatile and, yes, even better accuracy!

A hard anodized CNC-machined billet receiver is the foundation of this lightweight setup. The receiver and barrel shroud are precision-machined as one piece from aluminum alloy. An integral Picatinny rail is machined into the top of the receiver. It is then fitted with either a 4.5" or 6" precision stainless steel barrel that has been machine-honed and lapped. The barrel has been contoured to reduce weight without sacrificing accuracy.

The LLV Competition Upper features a stainless steel breech face designed to withstan … (more details).

Exact Edge Extractor for MKII and MKIII

The Exact Edge Extractor is manufactured through an EDM process to produce exacting tolerances. The new extractor will not lose its edge under impact such as other extractors made from stamped steel or titanium that will have their edges roll over and actually cause extraction problems after a short period of use. Our extractor features a very precise hook point. It is hardened to a Rc 58-60 to withstand years of use and still maintain its edge. We are able to hold the tolerances to +/-.0001" by utilizing the EDM manufacturing process. The hook is .005" closer to the rim of the cartridge to allow for the most positive extraction available. Made of A2 tool steel. Fits the complete line of MKI … (more details).

All serial numbered items must be shipped to an FFL dealer.
All firearm orders require a $500 non-refundable deposit to initiate production.
Copyright ©2014 Volquartsen® Custom
Contact with website issues or suggestions.