Sig Sauer Folding Visor Stock MCX/MPX 1913 Interface

• 1913 Interface Compatibility: The stock mounts to the rear 1913 interface used on the MCX and MPX platform, making it a straightforward factory-style upgrade or replacement for rifles and carbines built around this attachment standard.
• Folding Design: The side-folding layout reduces overall length for transport, storage, and movement in confined spaces, while still giving the rifle a full shoulder stock when deployed.
• Locking Hinge: The hinge locks the stock open in the shooting position, which helps the rifle feel more secure and consistent during rapid handling, positional work, and general tactical use.
• Aluminum Construction: The aluminum body keeps the stock rigid and durable, an advantage for hard use where impact resistance and a stable cheek weld matter more than minimal weight alone.
• Visor-Style Clearance: The visor profile is designed to provide clearance when using a helmet or mask, making the stock especially practical for duty, training, and other equipment-heavy setups.

About the Folding Visor Stock Series

SIG SAUER folding stocks for the MCX/MPX 1913 interface are built as factory-fit solutions for shooters who want a compact rifle without giving up a proper shoulder stock. Within the brand’s stock lineup, these models sit alongside telescoping and minimalist variants, but the visor-style version focuses on a fixed-length, folding format with a more substantial rear profile. That makes it relevant for tactical use, general range work, and competition setups where compact transport and fast deployment both matter.

The series is defined by its use of the M1913 rear attachment standard, allowing direct fitment on compatible SIG platforms and other firearms that use the same interface. Compared with collapsible designs, the visor stock approach favors a simpler structure with fewer moving parts in the length-of-pull system, which can appeal to shooters who prefer a more rigid feel. The folding mechanism remains the key feature, since it shortens the firearm for storage and movement while preserving a full stock when opened. In practical terms, this family is aimed at users who need durability, compact carry, and a factory-style fit for modern modular rifle platforms.

About the Sig Sauer Folding Visor Stock MCX/MPX 1913 Interface

The Sig Sauer Folding Visor Stock MCX/MPX 1913 Interface is a purpose-built stock for shooters who want a compact, rigid rear assembly on a compatible MCX, MCX-SPEAR, MCX-SPEAR LT, or MPX. Its fixed-length format suits users who prefer a consistent shoulder position every time the rifle is mounted, which can be useful for repeatable handling in training, practical shooting, and general tactical applications. Because it attaches through the M1913 interface, it follows the modular design philosophy of these platforms and installs as a dedicated factory accessory rather than an improvised adapter solution.

What sets this model apart is the combination of a folding layout and a locking hinge. Folding the stock makes the firearm easier to transport, store, and maneuver in tighter spaces, while the lock in the deployed position helps maintain a more solid feel once the rifle is shouldered. The visor-style shape also serves a practical role by providing clearance when using a helmet or mask, which is especially relevant on rifles configured for training, professional use, or protective equipment. With its aluminum construction and 15 oz [0.94 lbs] weight, the stock balances strength with manageable mass, giving the rifle a durable rear support without adding unnecessary complexity. Quick Disconnect sling swivel slots further support field use by making sling setup easier on a working rifle.

About Sig Sauer

SIG SAUER traces its origins to a wagon factory established near the Rhine Falls in Switzerland in 1853. Today, SIG SAUER, Inc. is headquartered in Newington, New Hampshire, and the company’s product range extends across firearms, ammunition, suppressors, airguns, and electro-optics. That broad manufacturing base is relevant here because it reflects a design approach centered on complete weapon systems and factory-fit accessories rather than stand-alone parts.

In the optics field, SIG SAUER produces riflescopes, red-dot sights, and rangefinders, while its firearms side remains closely tied to military, law-enforcement, and civilian shooting applications. The company name changed from SIGARMS to SIG SAUER in 2007, marking the identity it uses today across its modern rifle and accessory lines. For products such as MCX and MPX stocks, SIG SAUER’s reputation rests on making components intended to integrate cleanly with its own platforms and to match the handling requirements of tactical and sporting rifles.

Main Features

• Manufacturer: Sig Sauer
• Material: Aluminium
• Foldable: Yes
• Cheek piece adjustment: No
• Application: Competition, General, Tactical
• Compatible platforms: SIG MCX, SIG MCX-SPEAR, SIG MCX-SPEAR LT, SIG MPX
• Attachment type: M1913
• Locking: Yes
• Weight: 15 oz [0.94 lbs]
• Sling attachment type: Quick Disconnect (QD) Swivel Slots

Warranty

SIG SAUER covers this stock for 2 years. That warranty period suits a factory accessory intended for regular use on compatible MCX and MPX platform rifles and carbines.