• Compatibility: Works with all AR-15/M4 pattern rifle platforms/calibers
• Surface treatment: Cerakote matte black
• 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 2.2 oz
• Hinge length: 1.3 inches
Folding Hinge Stock Adapter creates the ability to easily configure your AR-15/M4 style rifle into a compact, low profile solution for easy transport, storage, or rapid deployment. Compatible with 5.56, .308, and pistol caliber AR rifles, it offers a unique, easy to install solution for those looking to significantly reduce the storage length of their rifle or carbine. No extra or special parts are required to be installed or changed to your standard rifle in order to be compatible with this adapter, making it truly user friendly and easy to install. A standard armorer's wrench is all that's needed to install it yourself.