Product Description
The HDA3 is a modular stock/brace system developed from a collaboration between Haga Defense and A3 Industries. The HDA3 was designed specifically to integrate seamlessly across dozens of firearm platforms without sacrificing strength or aesthetics to do so.
The HDA3 fills a footprint that the gun industry has already come to love while providing a level of quality, modularity and durability that has never been offered in a similar package. The HDA3 is designed, manufactured and assembled in the USA.
FEATURES:
- Factory Integration: The HDA3 variant for the G36 utilizes a custom hinge that mounts directly to the factory receiver. The hinge also includes a factory style locking button. A catch is designed into the cheek riser that locks onto the factory receiver when folded.
- Stock & Brace Configurations: The HDA3 is available as a stock with an injection molded extension and rubber buttpad or as a brace with an injection molded extension designed to accept a variety of arm braces. See below for brace compatibility.
- Adjustment: The HDA3's length can be adjusted in .5" increments between 7 positions. The cheek riser can be used in three positions. In the lowered position, raised .25" or raised .5". Both adjustments can easily be manipulated one-handed.
SPECIFICATIONS:
- Mounts to HK G36
- Confirmed to fit HK (including .22), TommyBuilt and S5
- Hinge Pin Included
- Folded stock blocks ejection port. Will only fire once when folded.
- Length:
- Stock configuration: 8.2-11.2"
- Brace configuration (without brace): 8.5-11.5"
- Weight:
- Stock configuration: 14.6 oz
- Brace configuration (without brace): 13.1 oz
- 7 Position extrusion with length adjustment in .5" increments
- 6061 aluminum extrusion with 7075 aluminum locking latch. Hardcoat anodized
- 3 Position Cheek Riser (0, +0.25" & +0.50")
- Polymer construction with hardcoat anodized 6061 aluminum adjustment button
- Textured Butt-pad (stock) manufactured from injection molded "rubber-like" Santoprene TPE
- Sling Mounts: There is a sling loop as well as two steel QD mounting points at the rear of the HDA3.
- Color: Available in Black, FDE, ODG and Gray.
- Designed, manufactured and assembled in the USA
PISTOL BRACE CONFIGURATION:
When purchasing the pistol brace configuration the HDA3 will be shipped with a brace mount not a butt-pad. The brace mount will accept tube mount style (1.195" Dia.) pistol braces which are NOT included.
Braces that are compatible with the HDA3 are listed below and can be purchased separately
- A3 Steady Brace (click here)
- Gear Head Works Tailhook MOD1 (click here)
- Gear Head Works Tailhook MOD1C (click here)
- Midwest Ind. Arm Brace Hook - (click here)
DISCLAIMERS: Customer is responsible for being aware of local, state, and federal laws regarding the use of this product.
INSTALLATION:
1. Physically and visually check that the firearm is unloaded and that the magazine and ammo have been removed.
2. To remove the factory stock, brace or adapter use a 3/16 rollpin punch to knock out the factory hinge pin. The pin can be removed in either direction.
3. The HDA3 can be installed with your existing rollpin or the new one included with the kit.
