DoubleStar Folding Stock Mechanism w/ Boss Left or Right Black. Fits between stock and receiver block. Can be mounted to fold either right or left. Specifications for DoubleStar Folding Stock Mechanism: Manufacturer: DoubleStar Color: Black Condition: New Fabric/Material: 7075-T6 Aluminum Weight: 3.5 oz Length: 3.75 in Gun Type: Rifle Features of DoubleStar Folding Stock Mechanism Standard Folding mechanism without boss Mounts to fold with right or left Package Contents: DoubleStar Folding Stock Mechanism The Doublestar Ace Folding Stock Mechanism Black A500 is a quality addition to the DoubleStar lineup. For more great deals on AR15 Stocks by DoubleStar please browse our Doublestar Gun Parts page. DoubleStar A500-K: Folding Stock Mechanism w/ Boss Left or Right Black