Sig Mcx/mpx Hinge Assembly W/1913

The Sig Mcx/mpx Hinge Assembly W/1913 is an essential factory replacement component designed for owners looking to restore or customize their folding stock configuration. This specialized hinge provides the structural foundation for the modularity that defines the MCX and MPX platforms, allowing users to transition between a compact footprint and a stable shooting position. Whether you are building a new short-barreled rifle or replacing a worn component, this authentic factory part ensures your firearm retains its original performance standards.

Engineered for durability, this mechanism utilizes a robust folding design that integrates directly with the standard 1913 Picatinny rail interface found on the rear of the receiver. The hinge features a secure locking system that prevents unwanted movement when the stock is deployed, maintaining the rigid lockup necessary for consistent accuracy. Finished in a matte black coating, the assembly is built to withstand high-recoil environments and the repetitive cycling common in professional use.

This Sig Mcx/mpx Hinge Assembly W/1913 is the ideal solution for shooters who require a reliable folding mechanism that is compatible with a wide range of SIG factory stocks. Installation is straightforward, mounting directly to the rear rail without the need for complex gunsmithing, making it a versatile choice for field repairs or modular upgrades. By choosing this genuine SIG SAUER part, you ensure perfect fitment and seamless operation with your existing MCX or MPX hardware.