Ultimate Trigger Kit for Ruger® Mark IV and Mark IV 22/45


$119.99 - $124.99
(16 reviews) Write a Review
0.30 LBS
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Hammer, Sear, and "Blast Shield" Installation Instructions

TANDEMKROSS RUGER 22/45 Victory Trigger Installation Instructions


The Ultimate Trigger Kit for Ruger® Mark IV™ and Mark IV™ 22/45™ is a match set ONLY - DO NOT use any other brand of sear or hammer with the TANDEMKROSS Ultimate Trigger Kit for Ruger® Mark IV™ and Mark IV™ 22/45™


At a glance:

  • Victory Trigger optimizes trigger pull thanks to built-in pre- and post-travel adjustability for fast and smooth trigger resets
  • Radiused sear and hammer interface for clean crisp repeatable trigger pull. 
  • Approximately 2–2.5lb trigger pull (results may vary)
  • Neutrally balanced, drop-safe sear
  • Highly impact and wear resistant, heat treated, S7 hardened tool steel for long-lasting, optimized performance!

The Ultimate Trigger Kit, by TANDEMKROSS is the ULTIMATE upgrade for the Ruger® Mark IV™ and Mark IV™ 22/45™! 


This Kit is a completely new take on the Ruger® Mark IV™ & 22/45™ fire control system! Every part of the trigger mechanism has been redesigned to reduce trigger pull weight and boost safety and reliability. The lubricant coating on the hammer and sear provide a consistently smooth hammer-sear interface right out of the box! 


The lighter [TK] hammer results in a higher velocity and decrease mass resulting in reduced lock times.


The TANDEMKROSS “Blast Shield” Magazine Disconnect promotes proper magazine alignment for consistent and reliable feeding while protecting the hammer and sear from debris and build up, making maintenance easy.


The Ultimate Trigger upgrade is a MUST-HAVE for rimfire competitions, small game hunting and anyone who wants a high-performance trigger system in their Ruger® Mark IV™ & 22/45™.


This Kit Contains:


Victory Trigger

  • Flat-faced, skeletonized design for better control
  • Textured trigger face offers no-slip grip in any condition
  • 100% adjustable for pre- and post-travel

Thunder Hammer and Lighting Sear

  • Safely and reliably decreases trigger pull weight
  • Provides consistently clean and crisp trigger break 
  • American-made and guaranteed for life

Blast Shield Magazine Disconnect

  • Allows for safe removal of the magazine disconnect
  • Facilitates proper magazine alignment
  • Shields sear and hammer from debris, boosting performance

The TANDEMKROSS Ultimate Trigger Kit for Ruger® Mark IV™ & 22/45™ installs easily and offers an unrivaled boost in performance and reliability!


Upgrade your Ruger® Mark IV™ or Mark IV™ 22/45™ with the Ultimate Trigger Kit today and be ready to take on any type of rimfire shooting; great under pressure or just for fun!



Supported Models:

  • Ruger® Mark IV™ 22/45™
  • Ruger® Mark IV™ 22/45™ LITE
  • Ruger® Mark IV™22/45™ Tactical
  • Ruger® Mark IV™
  • Ruger® Mark IV™ Tactical
  • Ruger® Mark IV™ Target
  • Ruger® Mark IV™ Hunter
  • Ruger® Mark IV™ Competition

Already have the [TK] Victory Trigger? Find all the other internals components in the “Blast Pack” for Ruger® Mark IV™ & 22/45™.


Don't forget, all TANDEMKROSS products are Made in the USA and come with a LIFETIME guarantee!


WARNING: This product can expose you to chemicals including chromium, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.

16 Reviews

  • 5
    Great Upgrade

    Posted by Louis Bederka on 7th Sep 2023

    A fantastic upgrade for my Ruger MkIV 22/45, just a tad difficult to install but well worth the money. Thank you for a great product.

  • 5
    Great product

    Posted by Blaine on 27th Jul 2022

    Great product, performance enhancer and east to install!

  • 5
    Nice upgrade Kit for my Mark 4 Lite

    Posted by Benjamin Beglinger on 16th Jul 2022

    I bought this kit since I like to customize my pistols. Thanks to the detailed instructions in the videos the installation was very easy and didn't take a lot of time.

  • 4
    Trigger kit

    Posted by dustan on 7th Jul 2022

    Good upgrade over stock about 3 1/2lb pull but I live a very light trigger.

  • 5
    Ultimate Trigger Kit for Ruger MKIV 22/45

    Posted by JP on 22nd Jun 2022

    Reasonably easy to install, just go along with the video and take your time. Very well made, the machnining is perfect. The factory trigger on the MKIV 22/45 is marginally acceptable at best. This kit changes all that. Beautiful trigger pull. Light, crisp and precise. I like the shield for the hammer and sear. Makes a big difference in keeping the internals of the pistol clean. The flat trigger and its adjustability enhances the trigger action even more. 100% recommend this if you're looking to drastically improve your trigger.

  • 5
    easy improvement

    Posted by TomTX on 8th Jun 2022

    Good quality, easy install, big improvement.

  • 5
    Ultimate trigger kit

    Posted by Ben on 24th May 2022

    Simply excellent. Very crisp trigger, travel is easy to set. Much nicer than factory. Highly recommend on a ruger mk4.

  • 5
    Ultimate" Trigger Kit for Ruger® MKIV 22/45

    Posted by GARY on 30th Apr 2022

    I had this kit installed on my Ruger 22/45 tactical. The trigger is absolutely awesome. improved the accuracy of hits by a large margin compared to the stock trigger. I also had the titanium firing pin and claw extractor installed. I highly recommend these parts.

  • 5
    Awesome kit!

    Posted by Gingy Beard on 30th Apr 2022

    This kit is hands down the best improvement I ve made on my Mark IV. Read TK s article about pre and post travel screws before installation.