Upriser Chassis for Ruger PC Carbine Installation Instructions
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® and PC Charger™!
The lightweight reinforced polymer UPRISER chassis is both lightweight and durable while providing 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 and stocks or braces!
The UPRISER package includes:
- Extended magazine release
- Flared magwell (hardware included)
- "hiveGrip" for AR-15 (hardware included)
- Stock and grip adapter
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.
hiveGrip for AR-15:
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.
Angled Stock and grip adapter: The angled Stock and Grip Adapter is angled at a 12° downward pitch. This is a perfect choice for iron sights or low-mounted optics. When shouldering the rifle, the stocks downward angle brings the sight picture up to your face allowing optics to be mounted closer to the bore axis. This also creates a comfortable and ergonomic cheek weld for quick and natural target acquisition.
Straight Stock and grip adapter: The straight Stock and Grip Adapter matches the more traditional aesthetics and ergonomics of the AR-style buffer tube and buttstock. This is great for anyone looking to use their Ruger® PC Carbine™ or PC Charger™ as a trainer. This is also ideal for anyone who prefers to mount their optics on a riser or who needs their optic mounted higher to allow for use with lasers, IR lights, thermals, or nods.
Don't be left behind! Elevate your performance with the new TANDEMKROSS UPRISER Chassis!
This kit is available in black or red. Your choice of color will change the color of the anodized Stock and Grip Adapter and Trigger Finger Extended Magazine Release. The body of the chassis and hiveGrip come in only black.
Supported Models:
- Ruger® PC Carbine™ in 9mm
- Ruger® PC Carbine™ in .40 S&W
- Ruger® PC Carger™
- Compatible with Ruger® factory and Midwest Industries aftermarket M-Lok® handguards
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!
Know your State and Federal laws before installing on your receiver
Canadian Customers: The UPRISER Chassis for the Ruger® PC Carbine™ is considered a frame by Canadian definitions 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 need to upload a clear and 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/summaryThis 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.
80 Reviews
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Upriser chassis review
I love my straight upriser chassis. Was so easy to install & makes the PC Carbine look and feel amazing. I highly recommend it.
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Upriser Chassis for Ruger PC Carbine
I wasn't too sure if I would like this chassis but now that I have it installed and have used it in two matches I really like the way it feels and handles. It is an outstanding upgrade to have and makes and already great carbine handle like a pistol.
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upriser stock
vast improvement over original stock
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Up riser chassis
The product fits well but needs the brass thread inserts like the OEM stock/chassis and should include the buffer tube at least for the price at the introduction
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Makes the PC Carbine Perfect
Full disclosure: I am a sponsored competitor for Tandemkross, but that does not have any bearing on my review of the Upriser... When I installed this the first time it was like night any day. The stock chassis is nice for what it is (non-pistol grip version), but I was having a difficult time getting down on the stock to actually use the iron sights. The Upriser solved that. The irons are right where I need them to be with the angled stock. Plus, the butt stock actually has full contact with my shoulder. My shouldering of the Ruger butstock, only a small portion of the butt pad was actually in contact with my body. Not so with the Upriser. The butt pad is fully in contact with my shoulder at all times. If I could submit pictures with this review you would see the difference. I also have no issues using a dot. My preferred dot is the Holosun 510c and works great with the Upriser. For me I do have to lift my head a little off the stock so I don't have the same "cheek weld" as I do with the irons. But since I shoot fast-paced sports like Steel Challenge, a firm cheek weld is not something I worry about. For me it's "put dot on target and pull trigger (TK Victory Trigger for PC Carbine)". I will tell you that every person I have let hold the Upriser have been made a believer. Every one of them have remarked how the angled stock was perfectly ergonomic and felt great.
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Uprizer
I love it. The 12° stock angle makes this thing feel like a rifle. When I shoot it now, just shoulder it and look through the scope that has a see-through mount. No messing around!!
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Love the upriser chassis!
Purchased the model 19100 version of the PC Carbine as that was what was available. While the stock wasn't bad, I really wanted a pistol grip with a much easier stock to adjust length of pull. Sure you could use spacers with the stock stock (sorry bout that), but it requires a tool each time and carrying the shims to add or remove. Also it wasn't the most comfortable for sight picture without a bad posture. The angled upriser solved all of those concerns and also added a significant improvement for magazine swaps with both the mag eject lever above the trigger and the mag well. Now only my skill is the only reason I cannot get to A classification in competitions, but I am happy that TK eliminated the reasons my carbine could have been the cause.
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Love My Upriser Chassis!
I love the Upriser Chassis! I was a little hesitant to buy it at first, because I wasn't sure about the 12 degree stock angle. But I was pleasantly surprised. The pictures don't do it justice. It looks great, even better, in person than the standard straight AR stock. It brings your sight picture to exactly the right position for both iron sights and optics. I use a red dot on a riser. I can comfortably pick up both right away. Try that with a standard straight AR Stock. I also love the beehive grip. I think its more comfortable than any AR grip I've ever used. Well done TandemKross! The expanded mag well is amazing. I amuse myself by trying to deliberately miss it, but it forces the mag in every time. I have only two minor recommendations for improvement, but they are very minor. First, in order to take down the receiver for cleaning you have to remove the grip. This adds a little time, but I can live with it. The second recommendation concerns the extended finger mag release, and ONLY applies to us left-handers. The mag release is only designed for right-handers. If you are a lefty you won't be able to take advantage of it. But if you are a righty, you'll love it. (What can I say, the world is made for right-handers.) Perhaps TandemKross could come out with a workaround. I'd definitely buy it! But the best advice I can give is don't be put off by the 12 degree stock angle like I was. You will be pleasantly surprised.
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Upriser review
Love this thing! Easy install with the help of Bill’s video but it’s super comfortable to shoot and looks aside the angled buffer tube and stock are really not a problem. When you shoulder it your eye lines right up with the site and the extended mag release right at your finger tip works awesome! TK hit another one out of the park with this one.
