TANDEMIZED “Kraken” for Ruger® Mark IV™ and Mark IV™ 22/45™
TANDEMIZED “Kraken” for Ruger® Mark IV™ and Mark IV™ 22/45™

TANDEMIZED “Kraken” for Ruger® Mark IV™ and Mark IV™ 22/45™

Part Number:TK26N0461
Average Rating
Your Price: $599.99
Out of Stock

Choose Options

“Kraken” Frame Color
Accessories Color
Add an “Accelerator” Forward Thumb Ledge

At a Glance:

  • Fully metallic lower replacing factory plastic

  • Fully assembled and upgraded with all TANDEMKROSS parts and accessories

  • “Drop-in” ready out of the box

  • Not serialized! Does not require an FFL

  • Compatible with virtually ALL factory or aftermarket Ruger® Mark IV™ and Mark IV™ 22/45™ uppers

Happy first birthday to the “Kraken” Aluminum Lower for Ruger® Mark IV™ 22/45™! To commemorate this momentous occasion, we are launching the new #TANDEMIZED “Kraken” now available for Ruger® Mark IV™ and Mark IV™ 22/45™.

The #TANDEMIZED “Kraken” is the single best way to get the most out of your Ruger® Mark IV™ Standard or 22/45™ pistol. What was once a stripped lower that required additional parts and assembly is now ready to host your pistol’s upper right out of the box! Increase the life and durability of your pistol while also increasing its reliability and performance!

TANDEMKROSS’s “Kraken” boasts an enlarged trigger guard for large or gloved hands, a hooked trigger guard for more points of contact, and textured backstrap for improved grip and ergonomics. Additionally, the takedown button has been replaced by a single takedown screw that helps preserve the pistol’s simple takedown while reducing play between the lower and upper for a firm, secure hold. The cerakoted aluminum is also much less susceptible to damage from heat, chemicals, impact, or general wear and tear.

Since all Ruger® Mark IV™ Standard and Mark IV™ 22/45™ pistols share the same one-button takedown feature, the “Kraken” will support virtually any factory or aftermarket Ruger® Mark IV™ or Mark IV™ 22/45™ uppers. This means the “Kraken” allows you to easily turn any Ruger® Mark IV™ into a Mark IV™ 22/45™. All you need is to swap out the factory Mark IV™ magazine base pads with Mark IV™ 22/45™ base pads. TANDEMKROSS’s extended magazine bumpers perfectly fit the bill! Try either the “Tomahawk” or “MarkPRO” Magazine Bumpers that both come in packs of two.

This upgrade contains over 30 parts, components, and accessories, all from TANDEMKROSS and all fully installed, assembled, tested, and ready to go as soon as it arrives at your door. Whether for serious competition or recreational plinking, the #TANDEMIZED “Kraken” is perfect for anyone looking to improve their favorite rimfire pistol.

With the #TANDEMIZED “Kraken” you’ll receive:

Choose your favorite color “Kraken” and all black or all red accessories! Plus, by choosing to add an “Accelerator” Forward Thumb Ledge to your #TANDEMIZED “Kraken” you’ll save $10!

Get the #TANDEMIZED “Kraken” for your Ruger® Mark IV™ or Mark IV™ 22/45™ today and make your good gun GREAT!

Your #TANDEMIZED “Kraken” is built to order and may require some extra time to assemble by our in-house customs shop. Please allow for as many as 3–4 weeks for full assembling and processing.

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

INTERNATIONAL CUSTOMERS: Because the “Kraken” is a frame, it is NOT available for direct 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

5 Stars
I have been shooting my Kraken weekly for a month now. I really like how it feels in my hand, the ledges and trigger guard configuration are great. The mag release works very well also. I've tried 3 MKIV uppers without issues. The trigger pull is very light. So far I'm very happy with my Kraken!
Did you find this helpful?  5 of 5 Found Helpful
Reviewed by:  from Massachusetts. on 4/16/2022
5 Stars
Kraken Complete Lower
As a long-time admirer of the Ruger Mark Series I had it in my head to finally make the leap. Thanks to previous experience with Tandemkross while upgrading other pistols I was positive the Kraken would be everything I hoped for in turnkey fashion, and TK did not disappoint! The Kraken just feels like a whole other pistol when compared to an OEM lower. Comfortable with ergonomic controls, beautiful machining, and finish. Trigger pull weight is superior, the shoe itself is comfortable. I could gush for days! Despite the step up in price the case can be made that [TK]’s all in one solution is a far better bargain than a factory Mark, particularly if you’re looking to upgrade your barreled upper with an aftermarket. First range outing was outstanding, far exceeding my already heightened expectations. If you find yourself at a crossroads while in want of a Mark IV, do yourself a favor and order a Kraken.
Did you find this helpful?  1 of 1 Found Helpful
Reviewed by:  from Iowa. on 5/2/2022
5 Stars
Kraken lower
Without a doubt, the Tandemkross Team does make guns great and I will take one step further, they are outstanding. I took it the range last week to sight it in and everyone was in amazed with how the gun felt in their hand and how well it shot. Thank you for the Kraken. I am very proud to shoot it and very honored that it is part of my collection.
Did you find this helpful? 
Reviewed by:  from Germantown, TN 38138. on 7/6/2022
5 Stars
Just received the Kraken. It is wonderful! I mounted a Volquartsen barrel and bolt to make a great pistol. I had a couple questions and Tyler answered them immediately. I’ve been dealing with Tandemkross for many years. It has been a real joy!
Did you find this helpful? 
Reviewed by: (Verified Buyer)  from Martinsburg, WV. on 6/27/2022
5 Stars
KRAKEN lower
I received the Kraken Lower a month ago and finally after a brief illness got to shoot it at a Steel Challenge match today (6-18-22). I loved it. In three of five stations I was able to improve from class c to class b. The trigger is by far the best I’ve ever used and the quality and craftsmanship is fantastic. I would recommend if your looking to upgrade you Ruger Mark IV.
Did you find this helpful? 
Reviewed by:  from Anna, Ohio. on 6/18/2022

Customers who bought this also bought:

Ruger® Mark IV™ 22/45™ LITE Pistol
Average Rating(1)
In Stock
Factory 10-Round Magazine for Ruger® Mark IV™ 22/45™
Average Rating(0)
Out of Stock
Average Rating(256)
In stock

Recently Viewed Items

Browse By Category