UPRISER  Chassis for Ruger® PC Carbine™
UPRISER Chassis for the Ruger PC Carbine

UPRISER Chassis for Ruger® PC Carbine™

Part Number:TK28N0370
Average Rating
Your Price: $199.99
In Stock

Choose Options

Now available for the "UPRISER" Chassis, is the Straight version for the Stock Grip Adapter. - Please note this option is chosen in the dropdown menu along with *Color and *Collapsible Buttstock and Buffer Tube for AR-15 by Rim/Edge*

At a Glance:

  • Trigger finger accessible magazine release

  • Compatible with virtually all AR Grips, buffer tubes and butt stocks

  • Comes with optional flared magwell

  • Includes renowned TANDEMKROSS hiveGrip for the AR-15 platform


Rise above the competition with the TANDEMKROSS “UPRISER” Chassis for the Ruger® PC Carbine®!


The lightweight reinforced polymer “UPRISER” chassis reduces the overall weight and provides a better balance and feel.

Designed with cross-compatibility in mind, the “UPRISER” Chassis will accommodate virtually all AR grips (with or without 'beavertail') and mil-spec buffer tubes/stocks!

The "UPRISER" package includes:

  • Extended magazine release 

  • Flared magwell (hardware included)

  • "hiveGrip" for AR-15 (hardware included)

  • Stock and grip adapter

  • Dowel pin


Trigger finger extended mag release:

Don’t skip a beat! The unique trigger finger actuated magazine release allows for quick and intuitive magazine release. Simply lift your finger off the trigger and press the release for fast and reliable mag changes.
Flared magwell:
The wide, flared and beveled design guides the magazine directly into your magwell, for faster and consistent mag changes.

Defined, ergonomic finger grooves improve hand placement for more accurate, controlled shooting, while the slim, low-profile design ensures an ideal fit for any user. Made from patented impact- and vibration-dampening material, these "hiveGrips" are an ideal upgrade for any AR-15. Designed with a hollow grip, the "hiveGrip" for AR-15 includes a removable O-ring sealed bottom to provide water resistant storage space for tools, extra rounds, or survival items.

*Stock and Grip adapter available in two options: 

(Option #1)Angled Stock and grip adapter: The Stock and Grip Adapter is angled at a 12 degree pitch. This is a perfect choice for red dot optics as the design allows for use of a wider assortment of sights. When shouldering the rifle, the sight picture is closer to the bore axis which allows use of an RMR, scope, or red dot without a riser. This creates a comfortable and ergonomic cheek weld, which will result in quick and natural sight acquisition.

(Option #2) Straight Stock and grip adapter: The Stock and Grip Adapter match the more traditional aesthetics of the AR style Buttstock

Don't have a Buttstock/Buffer tube? Bundle the Collapsible Buttstock and Buffer Tube for AR-15 by Rim/Edge, along with your "UPRISER" Chassis to be fully #TANDEMIZED! This is a complete mil-spec stock and buffer tube kit with a 6 position adjustable stock!


Don't be left behind! Elevate your performance with the new TANDEMKROSS “UPRISER” Chassis!

This kit is available in Black or Red-

RED option will include:

  • RED - Extended Mag release
  • RED - Stock and Grip Adaptor

Supported Models- This stock will accommodate 9mm and 40 caliber Ruger® PC Carbine®. Also compatible with Ruger® and Midwest Industries Forend

Please note: for the Ruger Chassis models, installation will require a second takedown screw. The "Twister" Takedown Knob for Ruger® 10/22® is an excellent replacement for this front takedown screw!

Compatibility note: The UPRISER Chassis is not compatible with factory models that shipped with the Magpul® PC Backpacker stock such as model #19130.

*Know your State and Federal laws before installing on your receiver*

Canadian customers please note: The UPRISER Chassis for the Ruger® PC Carbine™  is considered a frame and the Canadian government requires us to have on file a copy of your Possession and Acquisition License before we can export this part. You will upload a clear, legible scanned image or photo from your phone of your PAL to you EasyExport account.

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

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

Grandfathers in existing classifications of frames or receivers (to include split frames or receivers) and allows them to be marked in accordance with the existing requirements.

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.

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.
4 Stars
Awsome Addition but one Flaw leftys
With all the chassis upgrades for the Ruger PC Carbine, the Uprisers checks a lot of boxes. It's way cheaper then all of it's competition. It allows uses of factory sights or low mounted red dots. Lastly, it speeds up mag changes by bring the mag release button close to your finger, however the one flaw is in that feature for. It totally makes this chassis useless for left handed shooters. As a lefty myself, I would find this chassis slower in mag changes because I have to bring my support hand back further then just having the button on the right side of the mag well. For right handed shooters, this may be the best and cheapest AR chassis conversion on the market.
Did you find this helpful?  54 of 55 Found Helpful
Reviewed by:  from WV. on 5/16/2020
5 Stars
Tandemkross Upriser
The Tandemkross Upriser chassis for the Ruger PC carbine is a terrific upgrade to an already great little carbine. As expected based upon previous experience with upgrades from TK everything fit perfectly and the installation instruction were clear and concise. The angled butt stock is a real improvement making the site line and site acquisition very easy and fast. The competition style mag release and mag well are a nice touch as well. Great pricing and delivery from TK as always. I highly recommend this upgrade.
Did you find this helpful?  29 of 30 Found Helpful
Reviewed by:  from Carlsbad, CA. on 6/16/2020
5 Stars
Upriser Stock
This is really what the PC Carbine needed. The ergonomics are great. I especially like how it brings the the sight rail up to eye level. I do not have to bend my neck down into an uncomfortably position to acquire the sights. Being a tri-focal wearer this is a great asset. The installation is straight forward, the online video is easy to understand. It only took about a half hour to complete. I have only one suggestion, that TK would have put the possibility of attaching a two point sling or single point sling disconnect around the end of the chassis. Just ahead of the buffer tube would have been nice. Other than this nit pic I find the Upriser stock a perfect upgrade for this gun. Of course the TK trigger, compensator, sight and other upgrades don't hurt having either.
Did you find this helpful?  21 of 22 Found Helpful
Reviewed by:  from TAMARACK. on 8/18/2020
4 Stars
The upriser is a great upgrade to ur rifle you will not regret it, absolutely most have. Only 1 thing i did not like to disssasemble you will have to take out the pistol grip to reach that take down screw no big deal
Did you find this helpful?  15 of 16 Found Helpful
Reviewed by:  from NC. on 6/17/2020
5 Stars
Love it, fantastic unit, easy to assemble and game changer with the magazine release lever.
Did you find this helpful?  12 of 13 Found Helpful
Reviewed by:  from Canada . on 8/13/2020

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