An Innovative Tool To Transform Your AR-15/AR-9 Into A Folding Rifle
The Sylvan Arms AR-15/AR-9 Folding Stock Adapter Gen 3 – ARH300 is an innovative accessory that will allow shooters to easily adapt a Mil-spec AR-15 or AR-9 pattern rifle to a folding stock configuration. This will help significantly in reducing the length of the rifle for easy stow and travel.
The ARH300 is specifically designed for gas piston and direct impingement systems 5.56 to .308 systems, as well as .223 compatible, it has standard 1-3/16” x 16 thread and does not require any additional parts to be used with standard BC Groups. Can NOT be fired when open.
Easy Installation – No Special Tools Required
The Sylvan Arms AR-15/AR-9 Folding Stock Adapter Gen 3 is CNC machined from 7075 Billet Aluminum making it uniquely lightweight and corrosion-resistant. Adding this accessory to your AR build requires no specials tool except for a standard armorer’s wrench and the assembly weighs only 6.0 ounces.
Simply screw it into your receiver like a buffer tube, add your favorite buffer tube and stock, and you’re good to go.
Now Compatible with Silent Capture Buffer Springs!
Features:
- Allows folding stock for compact storage and carry.
- Weighs just 6.0 oz.
- Precision machined from B390 aluminum.
- Durable H-series Cerakote finish.
- Does not require special tools or parts.
- Designed for mil-spec 5.56 and .308 caliber AR-pattern rifles.
- Compatible with direct impingement and gas piston rifles.
- Adds just 1.3 inches to rifle’s length in firing position.
Specifications:
- Comes with a standard .625 bolt extension.
- Fit: platforms .223/5.56 to .308 & most 9mm
- 9mm bolt carriers with 5/8 ID (.625) standard sizing can use the bolt extension included, after removing the pin and weight from the bolt carrier
- If your bolt carrier group is causing the bolt extension to come up short contact us for a conversion
- 17/32 .531 bolt extension for smaller bolt carriers
- Compatible with Silent Capture Buffer Springs if you use our Silent Capture Bolt Extension
- 300 blk (blackout) compatible
- Adds 2 inches to length of pull
- Surface treatment: hard coat black anodized
- Material: 7075 CNC-machined billet Aluminum
- Thread specifications: 1-3/16″ X 16
- Hinge dimensions: 3 11/16 inches
- Hinge weight: 6.0 oz, BC – Extension 3.1 oz
- Hinge length: 1.3 inches
- Warranty: Limited lifetime






















