Sylvan Arms AR-15 Folding Stock Adapter - Gen 4 - Left Folding - ARH400-L
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Sylvan Arms
Overview
The Sylvan Arms AR-15 Folding Stock Adapter - Gen 4 - Left Folding - ARH400-L is designed to allow for a compact and versatile configuration of your AR-15 by enabling the stock to fold to the left side of the receiver. This folding mechanism enhances portability without sacrificing the ability to quickly deploy the firearm when needed. This adapter is particularly useful in builds where space-saving features are desired, such as in truck guns or compact home defense setups.
Specifications
Sylvan Arms AR-15 Folding Stock Adapter - Gen 4 - Left Folding - ARH400-L
Build history on GunPartPicker
Builders on GunPartPicker first added the Sylvan Arms AR-15 Folding Stock Adapter - Gen 4 - Left Folding - ARH400-L to a build in March 2026.
It was out of stock everywhere we track for all of September 2026, and today none of the 3 retailers we track has it in stock right now. Listed prices start at $169.99 at Classic Firearms for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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