Ruger MK I, II, III & IV Fiber Optic Adjustable Rear Sight Improve the performance of your Ruger MK I, II, III and IV with the new adjustable rear sight. Our bright and fully adjustable rear sight will enhance your confidence and shooting experience...

Volquartsen Target Sear for Ruger® MK II™ and Mk III™- 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.Does NOT Fit: Ruger MKIV Pistols 

Volquartsen VC2AK-S Accurizing Kitfor Ruger Mark II, III and 22/45, Silver/Black- Drop In Target Grade Accurizing Kit with silver extended bolt release and black trigger to provide a crisp, clean 2.25lb trigger pull (pull may vary slightly due to factory...

Ruger Mk I, II, III HSS Ease-Of-Assembly Upgrade- The HSS (Hammer Strut Support) is a parts upgrade that greatly improves the ease of assembly for Ruger MK I,  II, and III pistols (It DOES NOT fit ANY 22/45, nor ANY Mk IV). It simply eliminates the...

Volquartsen Mk II, III and 22/45 Competition KitAlso Converts Mk II, III and 22/45 Pistols to Eliminate the Magazine Disconnect  Trying to figure out which parts are needed to take the Ruger MKIII and 22/45 to the next level? Look no...

Volquartsen Mk II, Mk III and 22/45 Accurizing Kit Black/BlackAlso Converts Mk III Pistols to Eliminate the Magazine Disconnect  Features a Black Extended Bolt Release and Black Trigger. Complete drop-in kit for the Ruger MKII and MKII 22/45 to...

Volquartsen Target Hammer w/BushingFor Ruger® Mark II and Mark III- 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...

Main Spring Assemblies for Ruger Mk II, IIIPrecision made replacement for factory main spring assembly. Wire EDM and CNC machined to give the best fit and performance. Mk II and III version differs from 22/45 version due to grip angle difference in the...

Extended Bolt Release for Ruger MK II and Mk III (Not 22/45) Convert your Ruger Mk II or Mk III bolt release to a convenient thumb tab that works just the the bolt release on a 1911. Made by Majestic Arms. (Note: Does not fit 22/45 models).  E...

Ruger Mark IV Pistol Trigger Shims These trigger shims fit Ruger Mark I, II, III, IV & 22/45 Pistols. They install on the Left Side of the Trigger, between the Trigger and the #AN37 Bolt Stop Assembly. Installing a Shim here will stop the Trigger...

Krossfire Bolt for Ruger® Mark IV™ & 22/45™ A TandemKross Bolt with Black DLC Finish Assembled with TandemKross Firing Pin, Extractor, and Guide Rod Includes Integral Halo Charging Ring for Improved Clearing and Charging Upgrade...

Volquartsen VC2AK-S-ST Accurizing Kitfor Ruger Mark II, III, and 22/45, Silver/Stainless Trigger- Drop In Target Grade Accurizing Kit with silver extended bolt release and stainless trigger to provide a crisp, clean 2.25lb trigger pull (pull may vary...