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parts
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May 19, 2026
DEMO A3 Industries Hda3 Hybrid Polymer Sig Mcx/Rattler Folding Stabilizing Brace Black HDA3-SIG1-A3-B-LF-BLK
Sold byOptics Planet•Posted Apr 27, 2026
$332.50
$350.00
You save $17.50 (5% off)
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- Currently in stock.
- Category: parts
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Deal Details
DEMO A3 Industries Hda3 Hybrid Polymer Sig Mcx/Rattler Folding Stabilizing Brace Black HDA3-SIG1-A3-B-LF-BLK. The HDA3 was designed specifically to integrate seamlessly across dozens of firearm platforms without sacrificing strength or aesthetics to do so. Folding Steel Hinge: The HDA3 utilizes a steel hinge assembly ensuring a strong lockup in the straight and folded position that will not degrade with use. The HDA3 will by default fold to the left side canted at 3.5 degrees. Right side folding