Product Summary
The A3 Industries HDA3 is a high-durability folding stock and brace designed specifically for the SIG Sauer MCX-Rattler. It features a heavy-duty steel hinge assembly that ensures a secure lockup in both the straight and folded positions. The stock is built with an extruded aluminum spine and metal internal components, providing a robust feel without sacrificing aesthetics. Shoppers can customize their fit with a 3-position adjustable cheek riser and 7 length-of-pull positions, all of which are easily manipulated with one hand.
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