Sig Sauer ADAPTERXFOLD MCX/MPX Folding Knuckle Stock Adapter 1913 Picatinny Interface - Black

The Sig Sauer ADAPTERXFOLD is a folding knuckle stock adapter engineered for Sig Sauer's MCX and MPX pistol platforms. The unit clamps to the rear 1913 Picatinny interface to provide a solid mounting point for a pistol stabilizing brace, while the hinged design lets the brace assembly fold flat against the receiver for compact storage and transport.

Built from steel with a black finish, the adapter is a rugged, factory-direct mounting solution for any MCX or MPX owner who wants to run a folding stabilizing brace. Locked in the deployed position it keeps the brace solidly aligned with the receiver; folded, it dramatically shortens the overall package for easier stowage.

Installation is straightforward: clamp the adapter to the rear 1913 rail of the MCX or MPX, then mount any compatible stabilizing brace or folding stock to the adapter. As a genuine Sig Sauer factory accessory, the ADAPTERXFOLD matches the host pistol's finish and tolerances for a clean, integrated look.