#TANDEMIZED Ruger® Mark IV 22/45 Race Gun

Complete Firearms

$1,149.99 - $1,249.99
(10 reviews) Write a Review
10.50 LBS
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  • Shipping and FFL transfer fees are the responsibility of the customer.
  • This product is NOT eligible for free shipping promotions.
  • This firearm is a serialized product or “regulated good” and will NOT be shipped directly to the purchaser. This product requires an FFL transfer and we will ONLY send it to your designated FFL.
  • The fully #TANDEMIZED race guns are built to order and will require 3 to 4 weeks to fully process and assemble your custom build.


WARNING: Cannot ship to California, Connecticut, Massachusetts, or New York. Do not purchase this item if you have a billing or shipping address associated with these locations.


At a glance:

  • Fully assembled and upgraded Ruger® Mark IV™ 22/45™ LITE
  • Competition-ready right out of the box
  • Shipped in a “TandemKase” Pistol Bag


The #TANDEMIZED Ruger® Mark IV™ 22/45™ Race Gun is a rimfire pistol ready for competition right out of the box! This firearm will come with all the typical accompanying components you can expect coming from the factory, as well as a number of additional parts, accessories, and upgrades from TANDEMKROSS all pre-installed. Here’s all the great value packed into this single product for you:



This competition-ready pistol has been carefully assembled, upgraded, and live-fire tested by TANDEMKROSS’s own in-house gunsmiths to ensure the highest level of quality and safety. For as long as supplies last, this race gun comes in your choice of color for the “Kraken” Aluminum Lower, your choice of black or red for the upper, and your choice of black or red for the installed accessories.


This pistol is not just a pistol, but a piece of hand-tailored, American craftsmanship. Get your own #TANDEMIZED Ruger® Mark IV™ 22/45™ Race Gun today!


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

Patent Pending

Important Notes

RETURNS: No individual component of this product is eligible for return unless for manufacturer defect. To return an individual component of this bundle for any other reason, the package must be returned in full. All FFL transfer fees and shipping costs are the responsibility of the customer.


INTERNATIONAL CUSTOMERS: Please note, because this product contains a complete, serialized firearm and a frame, this product is NOT available for international sales.

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.

10 Reviews

  • 5
    Mark IV 22/45 Race Gun

    Posted by David Alley on 20th Jan 2024

    Cosmetically the pistol is dead on. Looks cool. Nice trigger pull ~2.5lbs. Safety, mag release, and bolt hold very smooth. No complaints. Super nice pistol.

  • 5
    Race Gun

    Posted by Michael on 18th Aug 2022

    Purchased a Tandemized Race gun - fantastic quality and performance. I am using in Steel challenge, and it shoots like a dream

  • 5
    Love this thing

    Posted by John H. on 2nd Jul 2022

    What a blast I ve had breaking in this fun little pistol! Even my wife loved it. Usually I modify a ton of before even shooting a new firearm but in this case, you guys did all the work! The only thing I changed was to remove the pic rail and replaced it with a Lobos Industries RMR Mount. This thing is perfect!

  • 5
    Kraken pistol

    Posted by John Carlen on 26th Jun 2022

    I recently purchased my Kraken. Upon receiving it I was impressed with the frame and the added features that had been built into it . A lot of thought went into its development. A fully built gun with very useful enlarged features, a square front trigger guard , thumb rest and spring mag release . Shooting this gun is a pleasure and I really appreciate the thought that created it ! Very reliable add accurate!

  • 5
    #TANDEMIZED Ruger® Mark IV 22/45 Race Gun

    Posted by Mike on 8th Jun 2022

    Great Job Tandemkross! We received the Mark IV on Friday afternoon. Went to the range that evening. The performance was phenomenal! We shot 400 rounds with no issues. The next day my daughter shot her state SASP match and took High Lady in Iron Pistol! We are ready to order a second Mark IV!

  • 5

    Posted by Stephen on 4th May 2022

    Outstanding firearm. Very accurate. Smooth trigger.

  • 5
    Tandemkross 22/45 Race Gun

    Posted by Louis P. on 23rd Apr 2022

    Purchased for Steel Challenge. Excellent build quality, very aesthetically appealing and has functioned flawlessly to date. Transfer process is a bit archaic but highly recommend the pistol.

  • 4
    Review of Race Gun

    Posted by ROBERT on 15th Apr 2022

    The gun shoots great and is reliable. I was told when I ordered it they could take off the forward thumb ledge (as I am a lefty). They didn't. I finally had pay a gunsmith to replace both huge thumbrests with OEM parts. An expense I wasn't expecting.

  • 5
    TC Mark IV Race Gun

    Posted by Paul on 22nd Mar 2022

    I have received much praise from folks at the range. It is steady in the hand and very accurate. I hit 1" groups at 10 yds Great gun. My wife loves it too!