Arsenal Inc. Buttstock left-side folding polymer 4.5mm pivot pin replacement for metal BLACK Arsenal Inc. - AK-LSFB

Upgrade your stamped receiver AK rifle with the Arsenal Inc. left-side folding polymer buttstock assembly in black. Designed as a direct replacement for traditional metal triangle folders, this Warsaw-length stock delivers enhanced ergonomics, durability, and functionality while maintaining the classic left-side folding profile.

Key Features

• Precision 4.5mm pivot pin compatibility – Integrates seamlessly with existing 4.5mm hinge mechanisms on stamped receivers for straightforward installation.
• Durable polymer construction – Lightweight yet rugged polymer body resists corrosion and wear, providing reliable performance in demanding tactical environments.
• Integrated scope rail recess – Allows for unobstructed mounting of optics and accessories without interference.
• Smooth-turning sling swivel – Enables quick and quiet sling attachment for improved maneuverability.
• Ribbed metal butt plate with trap door – Offers secure shoulder purchase and convenient storage for a cleaning kit.
• Buttstock catch release button – Provides positive locking and easy deployment of the folding mechanism.

Benefits for AK Owners

This US-made Arsenal buttstock solves common pain points with metal folders, including added weight and potential rust issues. The polymer design reduces overall rifle weight while preserving the compact folded profile essential for transport and storage. Its slick hinge mechanism ensures smooth operation without binding, and the Warsaw length provides a comfortable length-of-pull for most shooters.

Specifications

• Color: Black
• Material: Polymer with metal components
• Folding Direction: Left-side
• Length: Warsaw Pact standard
• Compatibility: Stamped receiver AK variants using 4.5mm pivot pin (pivot pin and cleaning kit sold separately)
• Weight: 9 oz
• Origin: Made in the USA by Arsenal Inc.

Why Choose This Product

Engineered specifically for stamped receiver platforms, this folding buttstock delivers OEM-level fit and finish. Whether replacing a worn metal stock or upgrading for lighter weight and modern features, it maintains full compatibility with your existing 4.5mm pin while adding practical enhancements like the trap door and sling swivel.

Ensure proper fitment on your specific rifle model, as compatibility may vary with non-mil-spec variants. Professional installation is recommended if you are unfamiliar with AK furniture replacement.