Sylvan Arms ARH400-L Gen4 Folding Stock Adapter Left Fold

Description

The Sylvan Arms Gen4 Folding Stock Adapter converts a standard AR platform into a foldable configuration to reduce overall length for compact storage and travel. The Gen4 design sits closer to the AR lower to minimize gaps and overall folded length. CNC-machined in the USA from 7075 billet aluminum, the assembly is lightweight and corrosion-resistant while including the hardware needed for installation. This adapter is intended for users who want a low-profile folding option for compatible AR-style platforms.

Key Specifications

• Made from 7075 billet aluminum and CNC-machined in the USA.
• Assembly weight is 6.0 ounces for a lightweight solution.
• Fit includes AR platforms for .223/5.56 to .308 and most 9mm.
• Uses a standard 1-3/16″ x 16 thread and works with standard AR15 bolt carrier groups.
• Includes a .625-inch aluminum bolt extension for applicable bolt carriers.
• Includes a castle nut wrench and other items needed for installation.
• Compatible with 300 Blackout platforms as noted in manufacturer details.
• Does not work with Tippmann 22 or LWRC pistols per manufacturer guidance.
• Designed to sit close to the AR lower to reduce overall length and minimize gaps.
• Includes an installation wrench for straightforward mounting without disassembly.

Engineered for compact stow and travel, the Sylvan Arms Gen4 adapter provides a durable, low-profile folding option for compatible AR platforms. The adapter’s lightweight construction and included hardware make installation straightforward, while its proximity to the lower receiver reduces folded length. For builders and operators seeking a compact configuration without added complexity, this Gen4 adapter offers a reliable mechanical solution.