Sylvan Arms AR-15 & AR-9 Folding Stock Adapter - Gen 5 - Left Folding

The Sylvan Arms SA5 Pro Folding Stock Adapter is a Gen 5, left-folding adapter CNC-machined from 4140 steel in the USA. It lets the stock on a standard AR-15 or AR-9 fold to the left for a more compact, transportable configuration.

Features:

• Gen 5 design, rated 250% stronger than Gen 4
• Folds to the left, away from the ejection port
• Weight: 9.4 oz
• Threads onto the buffer tube position with standard 1-3/16" x 16 threading
• Includes a 1045 steel bolt extension for standard AR-15 BCGs
• Two QD attachment points for sling mounting
• User-adjustable hinge tension and hardened buffer pin
• Installs in under 5 minutes with included tools

The Gen 5 adapter improves on previous generations with a stronger locking mechanism and user-adjustable hinge tension, so shooters can dial in how much resistance the fold has. It's compatible with mil-spec AR-15 and most AR-10 builds, and 9mm bolt carriers with a standard 5/8" ID can run the included bolt extension after removing the pin and weight from the back of the bolt carrier group.

Sylvan Arms builds folding stock adapters focused on strength and ease of installation, giving AR owners a reliable way to fold their rifle for compact transport or storage.