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Questions & Answers
Is this compatible with Ruger mark IV 22/45 Lite ???? Expert Answer

The TANDEMKROSS Ultimate Trigger Kit will work with the Ruger Mark IV 22/45 Lite.

by Hunter, Gear Expert, October 9, 2023
Customer Reviews
Helpful Negative Review Could Be Better by Grem, Verified Owner, December 18, 2022
I purchased the “Ultimate Trigger” for my 22/45. The stock trigger was not to good. Got this installed professionally and it is better but not as good as I was expecting. I like the flat shoe, but it could be a little lighter.
1/4 found this helpful
Most Recent Reviews Excellent Trigger by Kevin Donovan, Verified Owner, August 14, 2025
This a must have upgrade for the Ruger 22/45 models.
Most Recent Reviews Excellent Trigger by Kevin Donovan, Verified Owner, August 14, 2025
This a must have upgrade for the Ruger 22/45 models.
Most Recent Reviews Great upgrade for the Ruger Mark IV by lam12, Verified Owner, April 11, 2025
Very smooth pull, crisp break, and short reset. A little tricky to install but the TK videos were helpful. Highly recommended for a competition build or just range plinking.
Most Recent Reviews Great upgrade for the Ruger Mark IV by lam12, Verified Owner, January 22, 2025
Installation is a bit complicated but worth the time. Trigger kit functions flawlessly. I installed this to smooth out the trigger pull on my daughter's Ruger IV.
Most Recent Reviews Excellent Trigger by RonGT, Verified Owner, January 10, 2025
Installed the Ultimate Trigger Kit on a Ruger MKIV Tactical. Installation was a little tricky but found help on Youtube. After installation, I was able to easily adjust the trigger to my liking and it performs well. The Ruger has a decent trigger but...
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Product Info for TANDEMKROSS Ultimate Trigger Kit

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

The Ultimate Trigger Kit, by TANDEMKROSS is the ULTIMATE upgrade for the Ruger 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.

WARNING: California`s Proposition 65

Specifications for TANDEMKROSS Ultimate Trigger Kit:

Manufacturer: TANDEMKROSS
Fabric/Material: S7 Tool Steel
Trigger Shape: Skeletonized
Trigger Pull Weight: 2 - 2.5 lb
Caliber: .22 Long Rifle
Gun Make: Ruger
Gun Model: Ruger Mark IV 22/45
Condition: New
Finish: Textured
Weight: 5 oz

Features of TANDEMKROSS Ultimate Trigger Kit

  • 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 22.5lb 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

Package Contents:

  • TANDEMKROSS Ultimate Trigger Kit

TANDEMKROSS Ultimate Trigger Kit Orderable Models

List of Orderable Models

TANDEMKROSS Ultimate Trigger Kit, Ruger Mark IV 22/45, Flat-Faced, Skeletonized, 2.5lb, Black, TK26N0445BLK1 , MPN: TK26N0445BLK1 , UPC: 769498486764 , Code: 3GZ-PTR-TUTK1-TK26N0445BLK1
TANDEMKROSS Ultimate Trigger Kit, Ruger Mark IV 22/45, Flat-faced, Skeletonized, 2.5lb, Red, TK26N0445RED1 , MPN: TK26N0445RED1 , UPC: 769498486771 , Code: 3GZ-PTR-TUTK1-TK26N0445RED1

TANDEMKROSS Ultimate Trigger Kit Unavailable & Discontinued Models

List of Unorderable Models

TANDEMKROSS Ultimate Trigger Kit, Ruger Mark IV, Flat-Faced, Skeletonized, 2.5lb, Silver, TK24N0446SLV1 , MPN: TK24N0446SLV1 , UPC: 769498486795 , Code: 3GZ-PTR-TUTK1-TK24N0446SLV1
TANDEMKROSS Ultimate Trigger Kit, Ruger Mark IV, Flat-Faced, Skeletonized, 2.5lb, Black, TK24N0446BLK1 , MPN: TK24N0446BLK1 , UPC: 769498486788 , Code: 3GZ-PTR-TUTK1-TK24N0446BLK1
TANDEMKROSS Ultimate Trigger Kit, Ruger Mark IV, Flat-Faced, Skeletonized, 2.5lb, Red, TK24N0446RED1 , MPN: TK24N0446RED1 , UPC: 769498486801 , Code: 3GZ-PTR-TUTK1-TK24N0446RED1
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