HDA3
HDA3 Hybrid Polymer Brace - Universal 1913
HDA3 Hybrid Polymer Brace - Universal 1913
SKU:HDA3-1913-A3-B-LF-BLK
Fits these firearms:Springfield KunaFN SCARGForce BladeTaurus RPCUniversal
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Specifications
- Weight: 1.5 lb
- Mount type: 1913 Picatinny
- Finish: BlackFlat Dark EarthGreyOlive Drab Green
- Country of origin: USA
Product Description
The HDA3 is a modular stock and brace system developed through a collaboration between Haga Defense and A3 Industries. Designed to integrate cleanly across a wide range of firearm platforms, the HDA3 delivers strength, adjustability, and durability in a familiar, low-profile package.
This universal picatinny variant mounts directly to any mil-spec 1913 picatinny rail. 2.50" of rail space is recommended. The HDA3 is designed, manufactured, and assembled in the USA.
Features
Heavy-Duty Folding Hinge
The HDA3 uses a nitride-coated 17-4 stainless steel hinge for a strong, consistent lockup in both the folded and deployed positions. The standard configuration folds to the left at a 3.5-degree cant. Right-folding configurations are planned for a future release.
Hybrid Construction
Metal internal components provide strength where it matters most. The aluminum cheek-riser button and length-adjustment latch interface with a 6061 aluminum extrusion that connects directly to the steel hinge. Exterior components are injection-molded from 30% glass-fiber-reinforced nylon for a durable, lightweight shell.
Stock and Brace Configurations
The stock configuration includes an injection-molded extension with a textured Santoprene TPE buttpad. The brace configuration includes an injection-molded extension designed to accept compatible arm braces.
Tool-Free Adjustment
The HDA3 offers seven length positions in 0.50-inch increments. The cheek riser can be set to three heights: flush, +0.25 inch, or +0.50 inch. Both adjustments can be operated easily with one hand.
Multiple Sling-Mounting Options
The rear of the HDA3 includes an integrated sling loop and two steel QD sockets. Three additional QD mounting points are machined into the aluminum firearm adapter.
Specifications
- Universal 1913 Picatinny mounting interface (Recommend 2.5" of rail space)
- 6061 hardcoat-anodized aluminum adapter
- Adapter dimensions: 2.61" tall × 1.43" wide
- Nitride-coated 17-4 stainless steel folding hinge
- Left-side folding with a 3.5-degree cant
- Seven length positions with 0.50" adjustment increments
- 6061 hardcoat-anodized aluminum extrusion
- 7075 aluminum locking latch
- Three-position cheek riser: 0", +0.25", and +0.50"
- Hardcoat-anodized 6061 aluminum cheek-riser button
- 30% glass-fiber-reinforced nylon exterior components
- Santoprene TPE buttpad on stock configuration
- Available in Black, FDE, ODG, and Gray
Length
- Stock configuration: 8.36"–11.36"
- Brace configuration without brace installed: 8.70"–11.70"
Weight
- Stock configuration: 1 lb. 5.6 oz.
- Brace configuration without brace installed: 1 lb. 4.1 oz.
Designed, manufactured, and assembled in the USA.
First of all, outstanding customer service. I was able to speak to someone immediately each time I called and they were clear and knowledgeable (super rare these days). Braces shipped same day and arrived 4 or 5 days later, well packaged. Been looking for a descent brace since the Scar 15p came out. Cannot say enough about how pleased I am with both the aesthetics and functionality of this brace. It is solid and well worth the price. I rarely if ever take the time to leave a review but felt the need to do so in this case. Thanks again A3, I will definitely reach out in the future for other brace/ stock needs.
I put this on my Kuna and it works great. It's very sturdy and has some nice adjustability to it, even though I think the smallest form is the best for me.
This thing is super slick! I put it on a BRN-180 build and ofthey make an adapter to swing right side, I will be first in line. Would be great to fold the brace to the same side as the charging handle.
It’s awesome. It worked out very well.
These are incredbible! Solid, high quality.