SYLVAN ARMS AR15/AR9 Right-Hand Folding Stock Adapter

The Sylvan Arms AR15/AR9 right-hand folding stock adapter transforms your rifle into a genuinely compact package without sacrificing strength or reliability. Built from 4140 steel and CNC-machined in the USA, this adapter lets you fold the stock down for storage, transport, or tactical situations where a shorter profile matters. At just 9.4 ounces, it adds minimal weight while delivering 250% more strength than the previous generation—a serious upgrade if you've run earlier folding adapters and hit their limits.

Installation is straightforward: everything you need comes in the box, including the tools, and most AR15 owners can have it mounted in under five minutes. The right-hand fold option works with standard AR15 bolt carrier groups out of the box. If you're running a 9mm AR or .308, compatibility is there—though 9mm carriers with standard 5/8" bore diameter will need the included bolt extension after a minor BCG adjustment. The improved locking mechanism and adjustable hinge tension give you control over how tight the fold feels, and the hardened buffer pin handles repeated cycles without wear.

Two QD attachment points give you flexibility for mounting accessories, and the standard 1-3/16" x 16 threading integrates seamlessly with any stock that uses that spec. This is the kind of upgrade that pays for itself through practicality: faster transitions in vehicles, easier storage in tight spaces, and a platform that actually works hard for hunters, shooters, and professionals who need their AR to do more than just sit at the range.

Key Features

• CNC-machined 4140 steel construction, made in the USA
• 250% stronger than previous-generation adapters
• Right-hand folding design for quick transition
• Weighs only 9.4 ounces
• Adjustable hinge tension for custom feel
• Improved locking mechanism for reliable deployment
• Hardened buffer pin resists wear
• Two QD attachment points for accessories
• Includes all installation tools and 1045 steel bolt extension
• Installs in under 5 minutes with no gunsmithing

Specifications

Frequently Asked Questions

Will this work with my 9mm AR?

Yes. If your 9mm bolt carrier group has standard 5/8" (0.625) bore diameter sizing, use the included bolt extension—just remove the pin and weight from the back of the BCG first. No other modifications needed.

Does it fit my .308 or 300 Blackout?

Yes. The adapter is compatible with .223/5.56, .308, and 300 Blackout platforms, provided they use standard 1-3/16" x 16 threading.

What's included in the box?

The adapter comes with all installation tools needed for setup, a 1045 steel bolt extension for 9mm BCGs, and everything else you need to mount it—no additional parts required for standard AR15 bolt carrier groups.

Will this work with my Tippmann or LWRC 22 pistol?

No. This adapter does not work with Tippmann 22 or LWRC pistol platforms.