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The First Strike Energy Bar is part of the FSR or First Strike Ration. You will get 6 mini first strike bars with your purchase. All first strike bars (FSB) are freshest available with manufacture date of 2019 & 2020! Sterling Foods, LTD. The First Strike Ration, or FSR, is a compact, assault ration designed for use during initial periods of highly intense, highly mobile combat operations. The FSR is substantially reduced in weight and size and enhances soldier consumption, nutritional intake, and mobility. The Cran-Raspberry, Chocolate and Apple Cinnamon Bars are Net Wt 1.2 oz (35g). The Mocha Bars are also 1.2oz (35g) with 110mg Caff. - approx. the same as 1-cup-of-coffee.