Caliber Gourmet 50 Caliber Bottle Opener . Made using a 50 caliber semi-automatic rifle casing the Caliber Gourmet Bottle Opener has been designed to protrude from the bottom of the bullet casing. Now you can really put a dent into any bottle that stands in the way For a creative and unique way to open your favorite bottle choose the Caliber Gourmet 50 Caliber Bottle Opener. Package Contents: Caliber Gourmet 50 Caliber Bottle Opener The Caliber Gourmet 50 Caliber Bottle Opener is a quality addition to the Caliber Gourmet lineup. For more great deals on Hydration by Caliber Gourmet please browse our Caliber Gourmet Outdoor Gear page.