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Rival Arms ST-3X AR-15 Chassis Rifle Buttstock

EDEMO Rival Arms Rifle Stock Black Fits Ar-15 Bfr Tube Style Chas, EDEMO1
Rival Arms ST-3X AR-15 Chassis Rifle Buttstock, Black, RA-RA91R101A
Rival Arms Rifle Stock Black Fits Ar-15 Bfr Tube Style Chas
EDEMO Rival Arms Rifle Stock Black Fits Ar-15 Bfr Tube Style Chas, EDEMO1
Rival Arms ST-3X AR-15 Chassis Rifle Buttstock, Black, RA-RA91R101A
Rival Arms ST-3X AR-15 Chassis Rifle Buttstock, Black, RA-RA91R101A
Rival Arms ST-3X AR-15 Chassis Rifle Buttstock, Black, RA-RA91R101A
Rival Arms ST-3X AR-15 Chassis Rifle Buttstock, Black, RA-RA91R101A
EDEMO Rival Arms Rifle Stock Black Fits Ar-15 Bfr Tube Style Chas, EDEMO1
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EDEMO Rival Arms Rifle Stock Black Fits Ar-15 Bfr Tube Style Chas, EDEMO1
Rival Arms ST-3X AR-15 Chassis Rifle Buttstock, Black, RA-RA91R101A
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Rival Arms ST-3X AR-15 Chassis Rifle Buttstock, Black, RA-RA91R101A
Rival Arms Rifle Stock Black Fits Ar-15 Bfr Tube Style Chas
3 of 8 images
Rival Arms Rifle Stock Black Fits Ar-15 Bfr Tube Style Chas
EDEMO Rival Arms Rifle Stock Black Fits Ar-15 Bfr Tube Style Chas, EDEMO1
4 of 8 images
EDEMO Rival Arms Rifle Stock Black Fits Ar-15 Bfr Tube Style Chas, EDEMO1
Rival Arms ST-3X AR-15 Chassis Rifle Buttstock, Black, RA-RA91R101A
5 of 8 images
Rival Arms ST-3X AR-15 Chassis Rifle Buttstock, Black, RA-RA91R101A
Rival Arms ST-3X AR-15 Chassis Rifle Buttstock, Black, RA-RA91R101A
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Rival Arms ST-3X AR-15 Chassis Rifle Buttstock, Black, RA-RA91R101A
Rival Arms ST-3X AR-15 Chassis Rifle Buttstock, Black, RA-RA91R101A
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Rival Arms ST-3X AR-15 Chassis Rifle Buttstock, Black, RA-RA91R101A
Rival Arms ST-3X AR-15 Chassis Rifle Buttstock, Black, RA-RA91R101A
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Rival Arms ST-3X AR-15 Chassis Rifle Buttstock, Black, RA-RA91R101A

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Questions & Answers
What is the weight of this stock? Expert Answer

Rival Arms does not state the weight of the Rival Arms Rifle Stock Black Fits Ar-15 Bfr Tube Style Chas RA-RA91R101A. For that information I recommend contacting Rival Arms.

by Hunter, Gear Expert, May 25, 2023
what is the over all length of the stock Expert Answer

Dimension 2.30 X 6.55 X 11.95
HEIGHT 2.3000
WIDTH 6.5500
LENGTH 11.9500

by Todd, Gear Expert, September 30, 2021
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
very nice stock by bj, Verified Owner, August 3, 2023
I like it a lot, super sturdy seeming, all metal design. The fit and finish is very tight. The length of pull was little long for my intended host but it will find a home on something else soon enough.
3/3 found this helpful
Most Recent Reviews
Good Product, No Customer Service by spenser, Verified Owner, February 22, 2025
I have had this on my 308 for a few months now. It is very well built, and I believe it will be quite durable. However, the length of pull seems a bit long, even with the adjustability feature. Additionally, it is somewhat heavy, but I think the dura...
Read More...
Most Recent Reviews
great product by jamesb, Verified Owner, February 16, 2025
I don’t usually do reviews but this Product is make very well make and exactly what I was looking for. It has some adjustability, sturdy.
Most Recent Reviews
Rival chassis butt stock by D, Verified Owner, February 14, 2025
This is a very well built chassis butt stock. Easy adjustments length of pull. Comb height and can’t on the butt pad. Very nice stock
Read All 4 Reviews

Code: 3PV-RSC-RA91R101A-DEMO

MPN: RA-RA91R101A-DEMO

Product No Longer Available

Product Info for Rival Arms ST-3X AR-15 Chassis Rifle Buttstock

The Rival Arms AR-15 BFR style Carbine Stock is a fixed stock and comes with a basic cleaning kit. The cleaning kit consists of a cleaning rod (with o-ring guard) and a cleaning rod storage case. The cleaning kit does not come with the stock; instead it comes with the cleaning rod, a cleaning rod and a cleaning rod holder. The o-ring serves as a barricade block and the buttplate serves as a detent for the operator to easily remove the buttplate with one hand. The Rival Arms Carbine Stock includes the upper and lower receiver tubes but does not include the buttplate. You will need to purchase the AR-15 Carbine buttstock and complete the conversion.image

Features of Rival Arms ST-3X AR-15 Chassis Rifle Buttstock

  • CNC machined from solid billet aluminum
  • Skeletonized lightweight body
  • Vertical buttpad adjustment to get a perfect fit
  • Simple length of pull (LOP) & cheek rest height adjustment
  • Integrated M-LOK bag rider or mono-pod attachment point
  • QD flush cup sling mount on both right and left side

Package Contents:

  • Rival Arms ST-3X AR-15 Chassis Rifle Buttstock

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Rival Arms ST-3X AR-15 Chassis Rifle Buttstock Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Rival Arms Rifle Stock Black Fits Ar-15 Bfr Tube Style Chas , MPN: RA-RA91R101A-DEMO , Code: 3PV-RSC-RA91R101A-DEMO
  • Rival Arms ST-3X AR-15 Chassis Rifle Buttstock, Black, RA-RA91R101A , MPN: RA-RA91R101A , UPC: 788130031124 , Code: 3PV-RSC-RA91R101A-RA-RA91R101A
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Last updated 2026-07-07 UTC.