T3 Shotgun Rear Pistol Grip Combo Package
$179.99
Compatibility
- Mossberg 500/535/590/590S/835 12ga
- Mossberg Shockwave®, SBS/NFA regulations may apply.
- Maverick 88 12ga
- Remington 870 12ga
- Winchester 1200/1300 12ga you will need an additional adaptor, click here for the adaptor.
- Winchester SXP model year 2021 and newer will require modification to the adaptor before assembly to the shotgun, click here for more information. SXP Model year 2020 and older no modification needed.
- Does Not Fit Remington 870 DM & Mossberg 590M
Forend
- Forend Fitment
- Mossberg forends require a 6 3/4″ slide action tube
- Maverick shotguns will also require the addition of a Mossberg 6 3/4″ slide action tube.
- The forend included in this package is compatible with:
- Mossberg Shotguns with a removable forend, any Mossberg Shotgun newer than 2006 should be checked to insure that it has a removable forend.
- Winchester Forend Tubes with a Minimum Length of 6 ¼ Inches are Required for use of this Product.
Side Saddle
- Direct Fits:
- Mossberg 500/590/590S 12GA with Tapped Receiver
- Mossberg Shockwave®
- Side Saddle fits with modifications
- Maverick 88, Remington 870, Winchester SXP
- Modified fit will require gunsmithing to drill and tap receiver holes.Â
Product Highlights
Pistol Grip:
- T3 Pistol Grip
- Most Comfortable Shotgun Rear Pistol Grip on the Market
- X Series Recoil Reducing Pistol Grip
- Buil-In X Series Recoil Absorbing Backstrap
- Slim Ergonomic Design
- Sure-Grip Texture for Increase Control
- QD Attachment Point at the Rear of the Grip
- Universal Mount System
- Securely Fasten your Rear Pistol Grip with no Specialized Tools
- Mounts Included for All Supported Models in One Package
- All Mounting Hardware Included
- Scratchproof & Weatherproof
- DuPont® Extreme Reinforced Polymer
- Limited Lifetime Warranty
- Made in the USA
Forend:
-
- Tactical Shotgun Picatinny Rail Package
- One Left 2″ Picatinny Rail
- One Right 2″ Picatinny Rail
- Picatinny Rails Allow for Easy Installation of all Your Favorite Accessories
- Blank Inserts for When Rails are Not in Use
- Textured Forend
- Very Tough, yet Extremely Lightweight
- Mossberg forends require a 6 3/4″ slide action tube, Maverick shotguns will also require the addition of a Mossberg 6 3/4″ slide action tube.
- The forend included in this package is compatible with: (1) Mossberg Shotguns with a removable forend, any Mossberg Shotgun newer than 2006 should be checked to insure that it has a removable forend. (2) Winchester Forend Tubes with a Minimum Length of 6 Inches are Required for use of this Product.
- Tactical Shotgun Picatinny Rail Package
- Scratchproof & Weatherproof
- DuPont Extreme Reinforced Polymer
- Limited Lifetime Warranty
- Made in the USA
Gen 2 Side Saddle:
- CNC Machined 6061 T6 Aluminum
- Military Type III Anodized
- Integrated Top Rail
- Military Type III Anodizing
- 9 Shell customizable configuration
- Military grade reinforced synthetic material
- Shell holders mount in any location on the side saddle
- Mount as many or as few shell holders as desired
- Sleek Skeletonized Side Saddle Design
- Limited Lifetime Warranty
Side Saddle Patent US 8,316,569 B1
Why Choose the ATI T3 Shotgun Rear Pistol Grip Combo Package?
The ATI T3 Shotgun Rear Pistol Grip Combo Package is designed to give compatible shotguns a more ergonomic rear-grip setup while providing the components needed for a coordinated T3 conversion.
It is a practical option for owners who want improved grip control, a more modern handling feel and ATI platform compatibility in one package.
T3 Rear Pistol Grip Design
The T3 rear pistol grip provides a more defined hand position than a traditional straight shotgun stock.
Its shape is designed to give the shooter a secure, comfortable grip while maintaining straightforward access to the shotgun’s controls.
Coordinated Combo Package
The combo-package format brings compatible T3 components together rather than requiring the owner to source individual pieces separately.
That makes it easier to create a unified setup with components designed to work together.
Improved Handling and Control
A rear pistol grip can provide a more natural wrist angle and a firmer grip on the shotgun.
This can make the firearm more comfortable to handle during range use, maintenance and general operation, especially for shooters who prefer a pistol-grip-style interface.
Durable Synthetic Construction
The T3 system uses durable synthetic components designed for regular use and changing environmental conditions.
Synthetic construction also provides a practical alternative to traditional wood furniture when replacing worn or damaged stock components.
Supports Multiple Shotgun Platforms
The T3 product family is designed around several popular shotgun platforms, including compatible Mossberg, Remington and Winchester models.
Because mounting requirements differ between models, the correct adapter or configuration must be selected for the individual shotgun.
Always review the ATI Fitment tab before ordering.
Practical Upgrade or Replacement Package
The T3 Rear Pistol Grip Combo Package can be used when modernizing an existing shotgun, replacing damaged furniture or changing the rear-stock configuration.
Its modular design gives owners the ability to build around compatible ATI components as their setup changes.
The ATI Advantage
ATI’s T3 system is built around firearm-specific fitment, modular components and improved ergonomics.
The T3 Shotgun Rear Pistol Grip Combo Package brings those features together in a coordinated upgrade designed to give compatible shotguns a comfortable, durable and modern rear-grip configuration.
Accessories
View All Accessories →
Fast & Reliable Shipping
ATI Outdoors ships orders quickly using UPS, FedEx, and USPS Priority Mail, depending on the items purchased.
Shipping Details
- Most orders ship within 24-48 hours or less.
- Many orders ship the next business day, Monday through Friday.
- Backordered items ship as soon as they become available.
We currently ship within the United States, including Alaska and Hawaii at increased rates. ATI does not ship online orders internationally.
California notice: Due to California Bill AB1263, we are unable to sell or ship to California as of 01/01/26.

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