Sig Sauer MCX/MPX Folding Stock 8901412 Black Aluminum

The Sig Sauer 8901412 folding stock transforms MCX and MPX platforms into compact, adaptable systems without sacrificing stability or control. This aluminum construction stock reduces overall weapon length by approximately 7 inches when folded, enabling easier transport and storage while maintaining full functionality when deployed.

What Makes This Different

Unlike polymer alternatives, this aluminum folding stock delivers consistent lockup and zero retention through repeated folding cycles. The robust hinge mechanism withstands over 10,000 fold/deploy cycles while maintaining tight tolerances. Quick-detach sling swivel compatibility and adjustable length of pull accommodate various shooting positions and gear configurations.

Key Features

• Machined 6061-T6 aluminum construction for maximum durability
• Folds to the right side, reducing profile by 7 inches
• Compatible with both MCX and MPX rifle platforms
• Adjustable length of pull from 11.5" to 13.5"
• Integrated QD sling swivel mount points
• Positive lock mechanism prevents accidental folding
• Maintains cheek weld consistency across adjustment range

Field testing demonstrates reliable function across temperature extremes from -40°F to 140°F. The stock maintains zero when transitioning between folded transport and deployed firing positions. Law enforcement agencies report consistent performance during vehicle operations and confined space entries. Competition shooters benefit from the rapid deployment capability during stage transitions.

Technical Specs

• Material: 6061-T6 aluminum with hard anodized finish
• Weight: 1.2 pounds
• Length of pull: 11.5" to 13.5" (5 position adjustment)
• Folded length reduction: 7 inches
• Compatibility: Sig Sauer MCX and MPX platforms
• Finish: Type III hard coat anodizing
• Country of origin: USA

This folding stock addresses the primary limitation of traditional fixed stocks in tactical and transport scenarios. Professional users gain the maneuverability advantage of a folding system with the structural integrity of a fixed stock when deployed.