#TANDEMIZED Cthulhu for Ruger® Mark IV™ and Mark IV™ 22/45™
#TANDEMIZED Cthulhu for Ruger® Mark IV™ and Mark IV™ 22/45™

#TANDEMIZED Cthulhu for Ruger® Mark IV™ and Mark IV™ 22/45™

Part Number:TK26N0461
Average Rating
5
0
5
Your Price: $644.99
In Stock

Choose Options

Lower Frame Color
Accessories Color

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

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


The #TANDEMIZED Lower 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 Lower 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 Additionally, the takedown button has been replaced by a single takedown screw that helps preserve the pistol’s simple takedown while reducing play between the lower and upper for a firm, secure hold.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 less susceptible to damage from heat, chemicals, impact, or general wear and tear.


The TANDEMKROSS Lower will support virtually any factory Ruger® Mark IV™ or Mark IV™ 22/45™ upper. This means the TANDEMKROSS Lower allows you to transform any Standard Ruger® Mark IV™ into a Mark IV™ 22/45™!  Swap your factory Mark IV™ magazine base pads with our Mark IV™ 22/45™ base pads. Try either the two-pack of Tomahawk or MarkPRO Magazine Bumpers.


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 Lower is perfect for anyone looking to improve their favorite rimfire pistol.


Choose your favorite color TANDEMKROSS Lower and all black or all red accessories! Get the #TANDEMIZED Lower for your Ruger® Mark IV™ or Mark IV™ 22/45™ today and make your good gun GREAT!


With the #TANDEMIZED Lower you’ll receive:

Supported Models:

  • Ruger® Mark IV™ 22/45™

  • Ruger® Mark IV™ Standard

IMPORTANT: This product complies with ATF RULING 2009-2

Any person who installs “drop in” replacement parts in or on existing, fully assembled firearms does not manufacture a firearm and does not need to be licensed as a manufacturer under the Gun Control Act. A “drop in” replacement part is one that can be installed in or on an existing, fully assembled firearm without drilling, cutting, or machining. A replacement part, whether factory original or otherwise, has the same design, function, substantially the same dimensions, and does not otherwise affect the manner in which the weapon expels a projectile by the action of an explosive. Any person who is licensed as a dealer, which includes a gunsmith, and who installs “drop in” replacement parts in or on existing, fully assembled firearms as described in this ruling does not need to be licensed as a manufacturer under the Gun Control Act. Any person who is engaged in the business of installing “drop in” replacement parts in or on existing, fully assembled firearms as described in this ruling must be licensed as a dealer, which includes a gunsmith, under the Gun Control Act.

This item is NOT considered an “80% Lower” and Complies with Rule 2021 R-05F

The full definition can be found here: https://www.atf.gov/rules-and-regulations/definition-frame-or-receiver/summary
This product is NOT a serialized part.

*Rebuild kit comes pre-installed and does not include the tackle box.

INTERNATIONAL CUSTOMERS: Because the TANDEMKROSS Lower is a frame, it is NOT available for direct international sales.

This product is protected against mechanical failure for life by TANDEMKROSS’s Lifetime Guarantee. Learn more about our warranty and returns policies here.



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

5 Stars
Kraken
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?  22 of 23 Found Helpful
Reviewed by:  from Massachusetts. on 4/16/2022
5
5 Stars
TANDEMIZED Kraken
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?  14 of 15 Found Helpful
Reviewed by: (Verified Buyer)  from Martinsburg, WV. on 6/27/2022
5
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?  13 of 14 Found Helpful
Reviewed by:  from Iowa. on 5/2/2022
5
5 Stars
Yuppp
Exactly what I had hoped... a competition ready frame, out of a box...the balance is perfect and the trigger pull is light with a nice little take-up... and that trigger guard! Very handsome
Did you find this helpful?  10 of 11 Found Helpful
Reviewed by: (Verified Buyer)  from Nj. on 11/6/2022
5
5 Stars
Tandemized Kraken is a Winner
This lower is outstanding! Every item on it is superb. Most important, it makes shooting so much better. The trigger is about 1.9 lbs! WOW! Buttons are a litter larger and very easy to reach. All in all, this is a superb lower for the Ruger Mark IV 22/45 Lite.
Did you find this helpful?  10 of 11 Found Helpful
Reviewed by:  from Eugene, Oregon. on 10/29/2022
5

Customers who bought this also bought:

Recently Viewed Items

Information
Browse By Category