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Customer Reviews
Helpful Positive Review
Works perfect by BillsMafia, Verified Owner, December 3, 2024
Great quality, perfect fit. All folding braces work, so we got options baby!
1/1 found this helpful
Helpful Positive Review
As expected by wolf0387, August 16, 2023
As expected from A3 This adapter fits great and was easy to install. The polymer is high quality and took some weight off of my GHM. I recommend this to anyone that is looking to brace or SBR their GHM.
1/1 found this helpful
Read All 2 Reviews
Condition:
New
Color:
Black
Gun Make:
Brugger & Thomet
Gun Model:
Universal
Additional Features:
Picatinny

Code: 69H-STA-GHM9RS-RSA004

MPN: RSA004

UPC: 810151872209

List: $151.99Save 24%
$115.99

Product Info for A3 Industries Rear Stock Adapter for B&T GHM9

Manufactured as a Polymer/Aluminum hybrid, our rear adapter provides the OE fit of the polymer adapter with a heavy duty 1/4in thick aluminum insert that supports the hinge mount. The A3 Industries adapter allows the use of our complete line of modular stocks and braces and can also be configured with our Picatinny rail. The Picatinny rail will allow you to adapt any side folding stock (or arm brace) designed for use with Picatinny style mounts.image

Comes complete with new steel upper mounting dowel and HK-style ILWT take-down pin. Steel Quick Disconnect (QD) socket available that fits either side of the adapter.

The bolt pattern and locating lug on the rear of the adapter provides a positive modular mounting platform for a wide variety of our available stocks/braces.

Specifications for A3 Industries Rear Stock Adapter for B&T GHM9:

Manufacturer: A3 Industries
Condition: New
Color: Black
Gun Make: Brugger & Thomet
Gun Model: Universal
Gun Type: Carbine
Fabric/Material: Polymer/Aluminum
Additional Features: Picatinny
Finish: Type II Low Gloss Anodized

Features of A3 Industries Rear Stock Adapter for B&T GHM9

  • Polymer/Aluminum hybrid design
  • OE-fit to receiver with reinforced hinge mount and steel locating dowel
  • New HK-style takedown pin included
  • 2-position QD lug for mounting sling
  • No modifications to firearm needed
  • Modular design for various cross-platform use
  • Large #10 threads and positive lug for increased mount stability

Package Contents:

  • A3 Industries Rear Stock Adapter for B&T GHM9

A3 Industries Rear Stock Adapter for B&T GHM9 Orderable Models

List of Orderable Models

  • A3 Industries Rear Stock Adapter for B&T GHM9, Polymer/Aluminum, Picatinny, Black, RSA004 , MPN: RSA004 , UPC: 810151872209 , Code: 69H-STA-GHM9RS-RSA004

A3 Industries Rear Stock Adapter for B&T GHM9 Unavailable & Discontinued Models

List of Unorderable Models

  • USED, A3 Industries Rear Stock Adapter for B&T GHM9, Polymer/Aluminum, Picatinny, Black, RSA004 , MPN: RSA004-EDEMO , Code: 69H-STA-GHM9RS-RSA004-EDEMO-RE-C
  • A3 Industries Rear Stock Adapter for B&T GHM9, Polymer/Aluminum, 2-Bolt, Black, RSA003 , MPN: RSA003 , Code: 69H-STA-GHM9RS-RSA003
  • DEMO, A3 Industries Rear Stock Adapter for B&T GHM9, Polymer/Aluminum, Picatinny, Black, RSA004 , MPN: RSA004-DEMO , Code: 69H-STA-GHM9RS-RSA004-DEMO
  • USED A3 Industries Rear Stock Adapter for B&T GHM9, Polymer/Aluminum, Picatinny, Black, RSA004, EDEMO2, Used, Condition Like New , MPN: RSA004-EDEMO2 , Code: 69H-STA-GHM9RS-RSA004-EDEMO2
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Last updated 2026-09-23 UTC.