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Triad Bullpup Chassis For Brn-180 Upper Receiver Rifle - Triad Bullpup Chassis For Brn-180 Rifle Upper Receiver
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$664.95
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SKU: 430108947
Overview
Built for the BRN-180 upper receiver rifle, this bullpup chassis is aimed at shooters who want a compact rifle configuration without changing the upper receiver platform. It combines aluminum, steel, bronze-bushed linkage components, and reinforced polymer housing to create a purpose-built chassis system with an ambidextrous selector and an extended butt-plate for rifle use. The design is clearly focused on integration and control rather than simplicity, so it suits users who are comfortable assembling a more specialized setup. For hunters and outdoorsmen evaluating a chassis conversion, it offers a defined path to a shorter overall package while staying within the BRN-180 upper receiver format.
Why Hunters Choose the A3 Industries
Brn-180 Upper
Receiver rifle platform
Includes A3
Detent spring and detent
Uses Anti-walk
Trigger pins and a reinforced
Aluminum, Steel,
Bronze, and polymer components in
1.50-inch Extended
Butt-plate for rifle configurations
Key Features
- Bullpup chassis designed for BRN-180 upper receiver rifles.
- 6061 aluminum front trigger housing/receiver.
- A3 Tactical ambi selector with detent spring and detent.
- 7075 aluminum transfer bar and rear linkage with oil-embedded bronze bushings.
- 30% fiber-reinforced Zytel polymer main chassis housing.
- 1.50-inch extended butt-plate included for rifle use.
Best Used For
- Hunters wanting a bullpup chassis setup for a BRN-180 upper receiver rifle
- Users seeking an ambidextrous selector and integrated trigger linkage components
- Rifle owners interested in a chassis with aluminum, steel, and reinforced polymer construction
- Shooters building a compact rifle configuration around an existing BRN-180 upper receiver
Specifications
| 17 4 Stainless Front Trigger Linkage With Qpq Coating | 17-4 stainless front trigger linkage with QPQ coating |
|---|---|
| 17 4 Stainless Mim Front Trigger With Qpq Coating | 17-4 stainless MIM front trigger with QPQ coating |
| 4140 Steel And 7075 Aluminum | 4140 steel and 7075 al Mfg: A3 Industries |
| 4140 Steel Anti Walk Trigger Pins | 4140 steel Anti-walk trigger pins x 3 |
| 6061 Aluminum Front Trigger Housingreceiver | 6061 aluminum front trigger housing/receiver |
| 7075 Aluminum Transfer Bar And Rear Linkage | 7075 aluminum transfer bar and rear linkage, bushed with 841 oil-embedded bronze bushings |
| A3 Tactical Ambi Selector | A3 Tactical ambi selector with detent spring and detent |
| Acetal Delrin Guide And Trigger Actuator | Acetal Delrin guide and trigger actuator |
| Extended Butt Plate | 30% fiber-reinforced injection molded 1.50" extended butt-plate (rifle only) |
| Main Chassis Housing | 30% fiber-reinforced injection-molded Zytel polymer main chassis housing |
Pros
- Designed specifically for the BRN-180 upper receiver rifle platform
- Includes an A3 Tactical ambi selector with detent spring and detent
- Uses anti-walk trigger pins and a reinforced trigger linkage setup
- Combines aluminum, steel, bronze, and polymer components in the chassis
- Features a 1.50-inch extended butt-plate for rifle configurations
Considerations & Trade-offs
- Designed specifically for the BRN-180 upper receiver rifle, so it is not a general-purpose chassis for other platforms.
- The bullpup layout changes the rifle’s handling and balance, which may require some adjustment for users accustomed to a conventional setup.
- The chassis uses a mix of aluminum, steel, bronze-bushed linkage parts, and fiber-reinforced polymer, so it is a multi-material system rather than an all-metal build.
- The extended 1.50-inch butt-plate is listed for rifle use only, which limits configuration flexibility.
Suggested Comparisons
- Bullpup rifle chassis systems
- BRN-180 upper receiver accessories
- Rifle conversion chassis
- Ambidextrous selector components
Suggested Accessories
- Rifle sling
- Optic mount
- Cleaning kit
- Spare magazines
Frequently Asked Questions
What upper receiver is this chassis made for?
The product title and description identify it as the Triad Bullpup Chassis for the BRN-180 upper receiver rifle. No other compatibility details are provided.
What materials are listed in the chassis construction?
The listed materials include 6061 aluminum, 17-4 stainless steel, 4140 steel, 7075 aluminum, Acetal Delrin, and 30% fiber-reinforced injection-molded Zytel polymer.
Does this chassis include an ambidextrous selector?
Yes. The source data lists an A3 Tactical ambi selector with detent spring and detent.
Is the butt-plate included, and is it for rifle use?
Yes. The description lists a 30% fiber-reinforced injection-molded 1.50 inch extended butt-plate, and it is noted as rifle only.
Who makes this chassis?
The manufacturer listed in the source data is A3 Industries.