The Sig Sauer Folding/Telescoping Collapsible Stock for MCX/MPX, FDE (Sig Sauer part number STOCK-X-FOLD-TELE-FDE) is a factory replacement stock assembly built for Sig’s MCX and MPX platforms. Sig Sauer designs this stock to install easily on any receiver with a mounted 1913 rail interface, not just MCX and MPX builds, giving it broader compatibility across compatible platforms. The stock both folds and telescopes, so it adjusts for length of pull while also collapsing down for more compact storage or transport. Finished in Flat Dark Earth, it is a straightforward factory-correct upgrade over a standard fixed or telescoping-only stock.

Key Specifications

• Classified as a Stock, replacing the factory stock assembly on compatible platforms.
• Both folds and telescopes, combining collapsible length-of-pull adjustment with a folding stowed position.
• Installs via a receiver-mounted 1913 rail interface, fitting MCX, MPX, and other compatible platforms.
• Finished in Flat Dark Earth (FDE) to match tan and desert-toned builds.
• An original Sig Sauer factory replacement part designed for easy installation.

Frequently Asked Questions

What platforms does this stock fit? Any receiver with a mounted 1913 rail interface, including Sig’s MCX and MPX platforms.

Does it fold and adjust length? Yes, it both folds for storage and telescopes to adjust length of pull.

Buy the Sig Sauer Folding/Telescoping Collapsible Stock

Upgrade your MCX, MPX, or other 1913-rail platform with this factory Sig Sauer folding and telescoping stock. Order it from our Sig Sauer lineup of rifle stocks and our Lubbock, Texas team will get your order ready to ship as soon as it’s available.