UPRISER Chassis for Ruger® PC Carbine

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.