DoubleStar Tactical Bottle Opener Black. Functions as a single point sling mount and bottle opener Specifications for DoubleStar Tactical Bottle Opener: Manufacturer: DoubleStar Color: Black Finish: Anodized Fabric/Material: 7075-T6 Aluminum Aluminum Gun Type: Rifle Gun Model: AR-15 Features of Doublestar Tactical Bottle Opener "Single point sling mount Bottle opener" Package Contents: Doublestar Tactical Bottle Opener What firearm models does the manufacturer say DoubleStar Tactical Bottle Opener is compatible with? The manufacturer suggests that DoubleStar Tactical Bottle Opener is compatible with AR-15DoubleStar A215: Tactical Bottle Opener Black